Alternative letter-case form of Twitterable.

A little twit.

Pertaining to Paul Twitchell or to the religion he founded, Eckankar.

plural of twithought.

A vague, uncertain, or indistinct thought; a doubt.

Twice thought.

(trademark) An online social networking service that enables users to send and read short messages (280 characters; originally 140).

(Internet, informal, countable) A user account belonging to the above service. / (Internet, informal, uncountable, in the form […] Twitter) A community on Twitter.

(transitive, intransitive, Internet, sometimes proscribed) To tweet; to post an update to Twitter.

(informal, video games) A video game requiring fast reactions.