Laugh at odd nude labourer (4)
I believe the answer is:
hand
'labourer' is the definition.
(hand is a kind of labourer)
'laugh at odd nude' is the wordplay.
'laugh' becomes 'ha' (**).
'at' is a charade indicator (letters next to each other).
'odd' indicates alternate letters.
The alternating letters of 'nude' are 'nd'.
'ha'+'nd'='HAND'
(Other definitions for hand that I've seen before include "Pass" , "Fingered organ" , "Aid?" , "Worker; body part" , "Cards dealt to player" .)