1
general::
see NO USE., 1. It's impossible; it can't succeed. For example It's no use; these pieces just don't fit. [c. 1800] 2. Also, it's no use to man or beast. It's worthless, it serves no purpose, as in This car is so old it's no use to man or beast. Also see HAVE NO USE FOR.
American Heritage Idioms
2
general::
Phrase(s): it’s no use (doing something)
it is hopeless to do something; it is pointless to do something. • It’s no use trying to call on the telephone. The line is always busy. • They tried and tried, but it was no use.
McGrawhill's American Idioms And Phrasal Verbs