A*cerb"i*ty (?), n. [F. acerbité, L. acerbitas, fr. acerbus. See Acerb.] 1. Sourness of taste, with bitterness and astringency, like that of unripe fruit.
2. Harshness, bitterness, or severity; as, acerbity of temper, of language, of pain. Barrow.