Meaning of AGO in English

AGO

/ əˈgəʊ; NAmE əˈgoʊ/ adverb

used in expressions of time with the simple past tense to show how far in the past sth happened :

two weeks / months / years ago

The letter came a few days ago.

She was here just a minute ago.

a short / long time ago

How long ago did you buy it?

It was on TV not (so) long ago.

He stopped working some time ago (= quite a long time ago) .

They're getting married? It's not that long ago (= it's only a short time ago) that they met!

••

WORD ORIGIN

Middle English ago , agone , past participle of the obsolete verb ago pass , used to express passage of time.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.