A cap, usually brightly coloured with bells and tassels, as worn by a court jester or fool.

From head to toe, especially of armor or other military accoutrements.

A permanent expanse of ice encompassing a large geographical area, e.g. in Earth's polar zones or at high elevation. [from 19th c.]

A small latex or silicone contraceptive device that fits over the cervix and stays in place either by suction or by surface viscosity.

(geometry) A portion of the surface of a sphere cut off by a plane.

A style of close-fitting cap or hat worn by women in the 16th century and later; a caul.

Alternative form of redcap (“goblin or imp”) / Alternative form of redcap (“breed of poultry”)

A loose cap, so called because of its puffy shape, typically secured around the head with an elastic, and frequently used in cleanrooms, food service, and other settings to contain loose hair.

(typography) A large initial letter that drops below the first line of a paragraph, usually used at the beginning of a section or chapter of a book.

Alternative spelling of watch cap