Row over a river (3)
I believe the answer is:
oar
'row' is the definition.
(thesaurus)
'over a river' is the wordplay.
'over' becomes 'o' (cricket abbreviation).
'river' becomes 'r'.
'o'+'a'+'r'='OAR'
(Other definitions for oar that I've seen before include "Rowing device" , "spoon?" , "Rowing blade" , "Propelling pole" , "Bladed pole" .)