Initialism of bipolar.

Synonym of Oriental tobacco

To fight, especially as practice for martial arts or hand-to-hand combat. / To strike with the feet or spurs, as cocks do. / To contest in words; to wrangle.

(now historical) A small pennon; a little banner, flag, or streamer. / (obsolete) A lady's favour or token as worn by a knight. / (rare, obsolete) A knight carrying a pennon.