(archaic or dialectal) Gone; gone by; gone away; passed; passed away. / (archaic or dialectal) Nearly gone; dead (used in Devonshire at the turn of the 19th century)

before

Before now.

(archaic, dialectal) present participle of go

Initialism of Attorney General's Office.

Obsolete spelling of ago

At a time in the past, especially the distant past.

Existing in the relatively distant past.

(informal, idiomatic) a (very) long time ago

(colloquial, fairy tales) Used to add emphasis to the fact that the story takes place in the distant past.