[ago] adj or adv [ME agon, ago, fr. pp. of agon to pass away, fr. OE agan, fr. a- (perfective prefix) + gan to go--more at abide, go] (14c): earlier than the present time "10 years ~"
AGO
Meaning of AGO in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012