1
general::
Phrase(s): *a hand in something [and] *a part in something
Fig. a part in establishing or running something. (*Typically: get ~; have ~; give someone ~.) • I would like to have a hand in the planning process. • I will not let Jane have a part in this project., Phrase(s): hand something in (to someone)
Go to pass something in (to someone)., Phrase(s): hand something in
to submit something by hand. • Did you hand your application form in? • I forgot to hand in my test paper.
McGrawhill's American Idioms And Phrasal Verbs