(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.

The cap that closes the opening of a tank, e.g. the fuel tank of a car, through which the tank can be filled.

Alternative spelling of ice cap

(now historical) A protective cap on the end of a gunstock. / (aeronautics) The protective covering on the end of an aircraft fuselage.

A device to improve the draught of a chimney, by presenting an exit aperture always to leeward.

Money traditionally collected in a cap for the huntsman at the death of the fox.

A kind of folio writing paper, made for the use of lawyers, in long narrow sheets which have the fold at the top or "narrow edge".

Alternative form of turncap

side cap

A foldable military cap with straight sides and a creased or hollow crown sloping to the back where it is parted.