One on hand to deal with cold weather? (6)
I believe the answer is:
mitten
'deal with cold weather?' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'one on hand' is the wordplay.
'one' becomes 'en' (I can't justify this - if you can you should give a lot more credence to this answer).
'on' means one lot of letters go next to another.
'hand' becomes 'mitt' (synonyms).
'en' after 'mitt' is 'MITTEN'.
'to' acts as a link.
Can you help me to learn more?
(Other definitions for mitten that I've seen before include "Fingerless glove" , "A glove with no partitions for fingers" , "Glove with no partition between fingers" , "Simple glove" , "boxing glove" .)