A*go" (?), a. & adv. [OE. ago, agon, p. p. of agon to go away, pass by, AS. āgān to pass away; ā- (cf. Goth. us- , Ger. er-, orig. meaning out) + gān to go. See Go.] Past; gone by; since; as, ten years ago; gone long ago.

-- Webster's unabridged 1913