Perspiration perforations (5)
I believe the answer is:
pores
'perspiration perforations' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for pores that I've seen before include "Minute openings in the skin" , "Ropes with small holes" , "Small openings in the skin" , "Tiny holes in the skin" .)