Meaning of PUSHING in English

PUSHING

push ‧ ing /ˈpʊʃɪŋ/ BrE AmE preposition

be pushing 40/60 etc spoken to be nearly 40, 60 etc years old – used only about older people:

Sheila must be pushing 40 by now.

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