Touch of cold? (3)
I believe the answer is:
tap
This clue could be a double definition.
'touch' is the first definition.
(tap is a kind of touch)
'cold?' is the second definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'of' is the link.
Can you help me to learn more?
(Other definitions for tap that I've seen before include "that's less hard than 11 [BASH] or 22 [BATTER]" , "Secret (phone) intercept" , "Strike lightly" , "Stopper enabling withdrawal of liquid" , "Somewhere to drink beer" .)