Use a lever (3)
I believe the answer is:
pry
'use a lever' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for pry that I've seen before include "Look inquisitively into private matters" , "Intrusively enquire" , "Peer impertinently, stick nose in" , "Interfere" , "Intrude" .)