A covering for the head, often in the approximate form of a cone, dome or cylinder closed at its top end, and sometimes having a brim and other decoration.

(figurative) A particular role or capacity that a person might fill.

(figurative) A receptacle used in a lottery or draw to pull out numbers or names, and can also refer to the lottery or draw itself.

(video games) A hat switch.

(typography, nonstandard, rare) The háček symbol.

(programming, informal) The caret symbol ^.

(Internet slang) User rights on a website, such as the right to edit pages others cannot.

(transitive) To place a hat on.

(transitive) To appoint as cardinal.

(intransitive) To shop for hats.