Angler's need (3)
I believe the answer is:
rod
'angler's need' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for rod that I've seen before include "The fly fisherman's stick" , "Measurement" , "Old saying 'Spare the . . . and spoil the child'" , "axle" , "Fishing pole" .)