Meaning of YONKS in English

YONKS

yonks /jɒŋks $ jɑːŋks/ BrE AmE noun [uncountable]

British English spoken informal a long time SYN ages :

It’s yonks since we had a good night out.

We went to Blackpool once, yonks ago.

not do something for yonks

We haven’t seen Tom and Jean for yonks.

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.