v. i. - To strike; -- with off.
v. i. - To exchange (usually two things of the same kind); to swop.
v. t. - To fall or descend; to rush hastily or violently.
v. t. - To beat the air, or ply the wings, with a sweeping motion or noise; to flap.
n. - A blow; a stroke.
n. - An exchange; a barter.
n. - Hastily.