banter

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Good-humored, playful conversation.
2. v. To speak to in a playful or teasing way.
3. v. To exchange mildly teasing remarks.

Century Dictionary and Cyclopedia

1. To address good-humored raillery to; attack with jokes or jests; make fun of; rally.
2. To impose upon or cheat, originally in a jesting or bantering way; bamboozle.
3. To challenge; invite to a contest. Synonyms Banter, Rally, quiz, tease, joke. We banter another in good humor chiefly for something he or she has done or neglected to do, whether the act or omission be faulty or ridiculous or not, if it only affords a subject for a laugh or smile at his or her expense, or causes a blush not altogether painful. Rally, literally to rail, generally implies some degree of sarcasm or pungency, and is aimed at some specific fault, offense, or weakness.
4. n. A joking or jesting; good-humored ridicule or raillery; wit or humor; pleasantry.
5. n. A challenge to a match or contest; the match or contest itself.

Wiktionary

1. n. Good humoured, playful, typically spontaneous conversation.
2. v. intransitive To engage in banter or playful conversation.
3. v. intransitive To play or do something amusing.
4. v. transitive To tease mildly.

GNU Webster's 1913

1. v. To address playful good-natured ridicule to, -- the person addressed, or something pertaining to him, being the subject of the jesting; to rally.
2. v. Archaic To jest about; to ridicule in speaking of, as some trait, habit, characteristic, and the like.
3. v. obsolete To delude or trick, -- esp. by way of jest.
4. v. Colloq. Southern and Western U. S. To challenge or defy to a match.
5. n. The act of bantering; joking or jesting; humorous or good-humored raillery; pleasantry.

WordNet 3.0

1. v. be silly or tease one another
2. n. light teasing repartee