(1):

(n.) A deposit on the earth of hail, mist, rain, sleet, or snow; also, the quantity of water deposited.

(2):

(n.) Great hurry; rash, tumultuous haste; impetuosity.

(3):

(n.) The act of precipitating, or the state of being precipitated, or thrown headlong.

(4):

(n.) A falling, flowing, or rushing downward with violence and rapidity.

(5):

(n.) The act or process of precipitating from a solution.