A waterproof headgear designed for use in the shower, to avoid wetting the hair.

Any agaric of the family Hygrophoraceae.

A cap with a rounded crown and a curved, stiffened bill at the front.

(slang) A condom.

(military slang, vulgar) A hat which is gathered and folded on the top.

Alternative spelling of skullcap

(US, baseball) A baseball cap worn inside-out and backwards, or in another unconventional manner, by players or fans, as a talisman in order to will a team into a come-from-behind rally late in the game.

(firearms) A dummy round of ammunition used to check ammo feed and other mechanical problems. / A cap or cover that snaps into place.

The plant miterwort.

Alternative spelling of ice cap