Hit with small underwear (5)
I believe the answer is:
socks
'underwear' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'hit with small' is the wordplay.
'hit' becomes 'sock' (socking is a kind of hitting).
'with' says to put letters next to each other.
'small' becomes 's' (abbreviation - e.g. clothes size).
'sock'+'s'='SOCKS'
Can you help me to learn more?
(Other definitions for socks that I've seen before include "Hose" , "White horse's leg marks" , "Hits forcefully (colloq.)" , "Dresses" , "Short hosiery" .)