(1):

(superl.) Skillful in using the hand; dexterous; ready; adroit.

(2):

(superl.) Performed by the hand.

(3):

(superl.) Ready to the hand; near; also, suited to the use of the hand; convenient; valuable for reference or use; as, my tools are handy; a handy volume.

(4):

(superl.) Easily managed; obedient to the helm; - said of a vessel.