Rowing team cold on Wye initially (4)
I believe the answer is:
crew
'rowing team' is the definition.
(as in a rowing crew)
'cold on wye initially' is the wordplay.
'cold' becomes 'C' (eg on taps).
'on' becomes 're' ('on' can be mean 'with reference to').
'initially' suggests taking the first letters.
The initial letter of 'wye' is 'w'.
'c'+'re'+'w'='CREW'
(Other definitions for crew that I've seen before include "A ship's workers" , "Group of operators" , "group of sportsmen" , "emulated cocks" , "Ship's or aircraft's staff" .)