Instrument of metaphorical meddling (3)
I believe the answer is:
oar
'instrument of metaphorical meddling' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for oar that I've seen before include "Scull" , "Bladed pole" , "Bladed implement" , "One of an eight" , "Crewman" .)