Weather men caught in a flurry of sleet (8)
I believe the answer is:
elements
'weather' is the definition.
(I know that elements is a type of weather)
'men caught in a flurry of sleet' is the wordplay.
'caught in' means one lot of letters goes inside another.
'a flurry of' indicates an anagram (I've seen 'flurried' mean this).
'sleet' anagrammed gives 'elets'.
'men' placed into 'elets' is 'ELEMENTS'.
(Other definitions for elements that I've seen before include "Fire, air, earth, water" , "fire and water, say" , "Eg, helium and silver" , "He and I are two" , "Nitrogen and oxygen, e.g." .)