ˈgrunt work BrE AmE noun [uncountable] American English informal
the difficult and uninteresting part of a job:
These guys do the grunt work in preparing tax returns.
ˈgrunt work BrE AmE noun [uncountable] American English informal
the difficult and uninteresting part of a job:
These guys do the grunt work in preparing tax returns.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012