(1):

(n.) A rushing or setting upon; an attack; an assault; a storming; especially, the assault of an army.

(2):

(n.) A setting about; a beginning.

(3):

(n.) Anything set on, or added, as an ornament or as a useful appendage.

(4):

(v. t.) To assault; to set upon.

(5):

(v. t.) To set about; to begin.