Member of crew cheated, taking in any number (4)
I believe the answer is:
hand
'member of crew' is the definition.
'hand' can be an answer for 'member' (hand is a kind of member). I am unsure of the 'of crew' bit.
'cheated taking in any number' is the wordplay.
'cheated' becomes 'had' (to have someone can mean to trick them).
'taking in' means one lot of letters goes inside another.
'any number' becomes 'n' (mathematical symbol for an unspecified number).
'had' enclosing 'n' is 'HAND'.
Can you help me to learn more?
(Other definitions for hand that I've seen before include "Unit of measurement of a horse's height" , "Pass" , "Clock or watch pointer" , "Clock pointer; labourer" , "Worker; body part" .)