muck in phrasal verb British English informal (
see also muck)
1. to do your share of the work that is necessary in order to get a job done:
If we all muck in, we could get the whole house painted by the end of the week.2. to share space with other people
muck in with There are only three bedrooms. Do you mind mucking in with the other boys? [TahlilGaran] Dictionary of Contemporary English ▲