Applause; worker (4)
I believe the answer is:
hand
This clue is a double definition.
'applause' is the first definition.
(hand is a kind of applause)
'worker' is the second definition.
(hand is a kind of worker)
(Other definitions for hand that I've seen before include "Clock or watch pointer" , "that may be engaged in a shake" , "Unit of measurement of a horse's height" , "employee" , "For example, a straight" .)