Severe cold (3)
'cold' is the definition.
(I know that iciness is a type of cold)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for iciness that I've seen before include "Frozen state of" , "Hostile attitude" , "Such weather" , "Hostility, unfriendliness" , "unfriendly manner" .)
'severe cold' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for nip that I've seen before include "Pinch with small drink" , "pop and > have a bite" , "Dram of spirits" , "Pinch; bite" , "Pinch, short drink" .)