Comedy shtick (3)
I believe the answer is:
bit
'comedy shtick' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for bit that I've seen before include "Small piece - used teeth" , "Segment" , "Small quantity or piece of metal for a horse" , "Boring tip of a drill" , "Took effect - fragment" .)