'ago' definitions:

Definition of 'ago'

From: WordNet
adverb
In the past; "long ago"; "sixty years ago my grandfather came to the U.S."
adjective
Gone by; or in the past; "two years ago"; "`agone' is an archaic word for `ago'" [syn: ago, agone]

Synonyms of 'ago'

From: Moby Thesaurus