WordNet sense 1 (not trimmed):

uncut, untrimmed

WordNet sense 2 ((used of grass or vegetation) not cut down with a hand implement or machine):

unmown

WordNet sense 3 (cause to operate by flipping a switch):

switch on, turn on

WordNet sense 4 (add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing):

expand