muck in
verb
(intr, adverb) British slang
to share something, such as duties, work, etc (with other people)
Words nearby muck in
muciparous,
muciparous gland,
muck,
muck about,
muck bar,
muck in,
muck up,
muck-a-muck,
muck-up,
muck-up day,
muckamuck