(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.

plural of filler cap

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

plural of large cap

plural of percussion cap

plural of ice-cap

Alternative spelling of ice cap

plural of drop cap

plural of nose cap

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