Dictionary entry

Tart

Webster's Dictionary 1913

Tart (?), a. [AS. teart. √63. Cf. Tear, v. t.] 1. Sharp to the taste; acid; sour; as, a tart apple.

2. Fig.: Sharp; keen; severe; as, a tart reply; tart language; a tart rebuke.

Why art thou tart, my brother? Bunyan.