Meaning of 8 in English

8

8 /eɪt/ BrE AmE written informal

a way of writing parts of words that sound like ‘-ate’, ‘-eat’, or ‘-ait’, used especially in emails and ↑ text message s :

gr8 (=great)

I h8 (=hate) homework!

It’s 2 l8 (=too late)

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