noun
(clothing) 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.
(figuratively) A particular role or capacity that a person might fill.
(figuratively) Any receptacle from which names or numbers are pulled out in a lottery.
(video games) A hat switch.
(typography, mathematics) The circumflex symbol.
(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.
(Cambridge University slang, obsolete) A student who is also the son of a nobleman (and so allowed to wear a hat instead of a mortarboard).
verb
(transitive) To place a hat on.
(transitive) To appoint as cardinal.
(intransitive) To shop for hats.
verb
(Scotland, Northern England or obsolete) simple past of hit