Foreman's sock? (8)
I believe the answer is:
uppercut
This could be a double definition.
'foreman's' is the first definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
'sock?' is the second definition.
(I've seen this before)
Can you help me to learn more?
(Other definitions for uppercut that I've seen before include "Punch delivered vertically to chin" , "one must take it on the chin" , "Part of boxer's repertoire" , "Boxer's blow" , "Boxing blow delivered to chin from below" .)