A problem in Arctic exploration (3)
I believe the answer is:
ice
'a problem' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.
'in arctic exploration' is the wordplay.
'in' indicates the answer is hidden within the clue.
'ICE' is hidden within 'arctic exploration'.
Can you help me to learn more?
(Other definitions for ice that I've seen before include "such an age" , "Winter formation" , "Being feeble, can't cut any" , "Glaciate" , "Do cake decoration" .)