* HATS and HEAD COVERINGS *

CAP to provide with a cap (a type of head covering) [v CAPPED, CAPPING, CAPS] : RECAP
HAT to provide with a hat (a covering for the head) [v HATTED, HATTING, HATS]
FEZ a brimless cap worn by men in the Near East [n FEZES or FEZZES] : FEZZED, FEZZY [adj]
TAJ a tall, conical cap worn in Muslim countries [n -ES]
TAM a tight-fitting Scottish cap [n -S]

COWL to cover with a hood [v -ED, -ING, -S]
HOOD to furnish with a hood (a covering for the head) [v -ED, -ING, -S] : UNHOOD
KEPI a type of cap [n -S]
KUFI a brimless hat [n -S]
MASK to cover with a mask (a covering used to disguise the face) [v -ED, -ING, -S] : MASKABLE [adj]
VEIL to provide with a veil (a piece of sheer fabric worn over the face) [v -ED, -ING, -S] : VEILER(s)

BECAP to put a cap on [v -CAPPED, -CAPPING, -CAPS]
BERET a soft, flat cap [n -S]
BUSBY a tall fur hat [n -BIES]
CURCH a {kerchief=n} [n -ES]
DERBY a type of hat [n -BIES]
MUTCH a close-fitting cap [n -ES]
RECAP to review by a brief summary [v -CAPPED, -CAPPING, -CAPS]
SHAKO a type of military hat [n -KOS or -KOES] : SHACKO
SNOOD to secure with a snood (a net or fabric cap for the hair) [v -ED, -ING, -S]
TERAI a sun hat with a wide brim [n -S]
TOQUE a close-fitting woman's hat [n -S] : TOQUE TOQUET TUQUE
TUQUE a knitted woolen cap [n -S] : TOQUE TOQUET TUQUE
UNCAP to remove the cap from [v -CAPPED, -CAPPING, -CAPS]
UNHAT to remove one's hat [v -HATTED, -HATTING, -HATS]

BARRET a flat cap [n -S]
BEANIE a small cap [n -S]
BICORN {bicorne=n} [n -S]
CALPAC a sheepskin hat [n -S] : CALPAC CALPACK KALPAC KALPAK
CAPFUL as much as a cap can hold [n -S]
CAPPER a {capmaker=n} [n -S]
CLOCHE a bell-shaped hat [n -S]
DOMINO a small mask [n -NOES or -NOS]
FEDORA a type of hat [n -S]
HATBOX a box for a hat [n -ES]
HATFUL as much as a hat can hold [n HATSFUL or HATFULS]
HATPIN a pin for securing a hat [n -S]
KALPAC {calpac=n} [n -S] : CALPAC CALPACK KALPAC KALPAK
KALPAK {calpac=n} [n -S] : CALPAC CALPACK KALPAC KALPAK
MALINE a delicate net used for veils [n -S]
MASKER one that wears a mask [n -S] : MASQUER(s)
MASQUE a dramatic entertainment formerly popular in England [n -S] : MASQUER(s)
MOBCAP a woman's cap [n -S]
MOBLED wrapped in or as if in a hood [adj]
PANAMA a lightweight hat [n -S]
PUGGRY {pugree=n} [n -GRIES] : PUGAREE PUGGAREE PUGGREE PUGGRY PUGREE
PUGREE a cloth band wrapped around a hat [n -S]  : PUGAREE PUGGAREE PUGGREE PUGGRY PUGREE
REDCAP a porter [n -S]
SHACKO {shako=n} [n -KOS or -KOES]
SKYCAP a porter at an airport [n -S]
TITFER a hat [n -S]
TOQUET {toque=n} [n -S] : TOQUE TOQUET TUQUE
TRILBY a soft felt hat [n -BIES]
UNHOOD to remove a hood from [v -ED, -ING, -S]
UNMASK to remove a mask from [v -ED, -ING, -S]
UNVEIL to remove a covering from [v -ED, -ING, -S]
VEILER one that {veils=v} [n -S]
VIZARD a mask [n -S] : VIZARDED [adj]
YASMAK {yashmak=n} [n -S] : YASHMAC YASHMAK YASMAK

BANDANA {bandanna=n} [n -S]
BANGKOK a straw hat [n -S]
BASHLYK a cloth hood [n -S]
BICORNE a type of hat [n -S] : BICORN(s)
BIRETTA a cap worn by clergymen [n -S]
CALOTTE a {skullcap=n} [n -S]
CALPACK {calpac=n} [n -S] : CALPAC CALPACK KALPAC KALPAK
CAPLESS being without a cap [adj]
CAPOUCH {capuche=n} [n -ES]
CAPPING a wax covering in a honeycomb [n -S]
CAPUCHE a hood or cowl [n -S] : CAPUCHED [adj], CAPOUCH
CHAPEAU a hat [n -PEAUX or -PEAUS]
COCKADE an ornament worn on a hat [n -S] : COCKADED [adj]
EARFLAP a part of a cap designed to cover the ears [n -S]
FLATCAP a type of hat [n -S]
GUISARD a {masker=n} [n -S]
HAIRCAP a hat [n -S]
HATBAND a band worn on a hat [n -S]
HATLESS lacking a hat [adj]
HATLIKE resembling a hat [adj]
HATRACK a rack for hats [n -S]
HOMBURG a felt hat [n -S]
MASKING a piece of scenery used to conceal parts of a stage from the audience [n -S]
MASQUER {masker=n} [n -S]
MONTERO a type of cap [n -ROS]
MOZETTA {mozzetta=n} [n -S or MOZETTE]
PETASUS a broad-brimmed hat worn in ancient Greece [n -ES]
PORKPIE a man's hat [n -S]
PUGAREE {pugree=n} [n -S] : PUGAREE PUGGAREE PUGGREE PUGGRY PUGREE
PUGGREE {pugree=n} [n -S] : PUGAREE PUGGAREE PUGGREE PUGGRY PUGREE
STETSON a broad-brimmed high-crowned felt hat -- a trademark [n -S]
TARBUSH {tarboosh=n} [n -ES]
TRICORN a hat with the brim turned up on three sides [n -S] : TRICORNE(s)
VEILING a veil [n -S]
YAMALKA {yarmulke=n} [n -S] : YAMALKA YAMULKA YARMELKE YARMULKE
YAMULKA {yarmulke=n} [n -S] : YAMALKA YAMULKA YARMELKE YARMULKE
YASHMAC {yashmak=n} [n -S] : YASHMAC YASHMAK YASMAK
YASHMAK a veil worn by Muslim women [n -S] : YASHMAC YASHMAK YASMAK

ANTIMASK a comic performance between the acts of a masque [n -S]
BABUSHKA a woman's scarf [n -S]
BANDANNA a large, colored handkerchief [n -S] : BANDANA(s)
BAREHEAD without a hat [adv]
CAPMAKER one that makes caps [n -S]
FACEMASK a device to shield the face [n -S]
HAVELOCK a covering for a cap [n -S]
HOODLESS lacking a hood [adj]
HOODLIKE resembling a hood [adj]
KAFFIYAH {kaffiyeh=n} [n -S] : KAFFIYAH KAFFIYEH KEFFIYAH KEFFIYEH
KAFFIYEH a large, square kerchief [n -S] : KAFFIYAH KAFFIYEH KEFFIYAH KEFFIYEH
KALYPTRA a thin veil [n -S]
KERCHIEF a cloth worn as a head covering [n -CHIEFS or -CHIEVES] : KERCHIEFED [adj]
KEFFIYAH {kaffiyeh=n} [n -S] : KAFFIYAH KAFFIYEH KEFFIYAH KEFFIYEH
KEFFIYEH {kaffiyeh=n} [n -S] : KAFFIYAH KAFFIYEH KEFFIYAH KEFFIYEH
MASKABLE <mask=v> [adj]
MASKLIKE suggestive of a mask [adj]
MOZZETTA a hooded cape worn by bishops [n -TAS or -TE] : MOZETTA
MOZZETTE <mozzetta=n> [n]
NIGHTCAP a cap worn to bed [n -S]
PELERINE a woman's cape [n -S]
PUGGAREE {pugree=n} [n -S] : PUGAREE PUGGAREE PUGGREE PUGGRY PUGREE
SKULLCAP a close-fitting cap [n -S]
SOMBRERO a broad-brimmed hat [n -ROS]
STRAWHAT pertaining to a summer theater situated in a resort area [adj]
TARBOOSH a cap worn by Muslim men [n -ES] : TARBUSH(es)
TRICORNE {tricorn=n} [n -S], TRICORNERED [adj]
UNMASKER one that {unmasks=v} [n -S]
YARMELKE {yarmulke=n} [n -S] : YAMALKA YAMULKA YARMELKE YARMULKE
YARMULKE a skullcap worn by Jewish males [n -S] : YAMALKA YAMULKA YARMELKE YARMULKE
VEILEDLY in a disguised manner [adv]
VEILLIKE resembling a veil [adj]

BALACLAVA [n -S]
BILLYCOCK [n -S]
GLENGARRY boat-shaped cap [n -GARRIES]
UNVEILING [n -S]

DEERSTALKER the hat Sherlock Holmes wears [n -S]
NECKERCHIEF [n -S]
TRICORNERED [adj]

* List compiled from OWL2 + Long List by Rebecca Slivka