(informal) a person's navel

A small coin cell

(graphical user interface, mobile telephony) A button displaying the hamburger icon (three parallel horizontal lines: ≡), used to activate a dropdown menu.

Alternative spelling of buttonquail

(usually in the plural) Any one of a number of plants with daisylike, button shaped flowers. / Button which may be attached to clothing without resorting to needle and thread.

(usually in the plural) Any one of a number of plants with daisylike, button shaped flowers of the genus Centaurea, especially the species Centaurea cyanus.

(idiomatic) Alternative form of button-down

Conservative. / Carefully planned and executed.

(idiomatic) A nose with a small size and a relatively flat, round shape, usually considered to be dainty or cute in appearance. / (idiomatic) A person having such a nose.

(slang) The clitoris.