Holes in knots? Hole in one? One in holes perhaps (8)
I believe the answer is:
shoelace
'one in holes perhaps' is the definition.
I can't judge whether this definition defines the answer.
'holes in knots? hole in one?' is the wordplay.
'in knots?' indicates an anagram (I've seen this in other clues).
'hole in one?' becomes 'ace' (I've seen this in another clue).
'holes' is an anagram of 'shoel'.
'shoel'+'ace'='SHOELACE'
Can you help me to learn more?
(Other definitions for shoelace that I've seen before include "Tier on foot" , "Footwear tie" , "What ends in aglets" , "Oxford tie?" , "String for footwear" .)