Smell Ping’s partner? (4)
I believe the answer is:
pong
This clue could be a double definition.
'smell' is the first definition.
(I've seen this before)
'ping's partner?' is the second definition.
The definition suggests a singular noun which matches the answer.
Can you help me to learn more?
(Other definitions for pong that I've seen before include "hum" , "Stench" , "In slang, a real stink" , "Nasty smell (informal)" , "Ping's regular partner?" .)