Woolly material primordial pouch hides from below (5)
I believe the answer is:
plaid
'woolly material' is the definition.
'plaid' can be an answer for 'material' (plaid is a kind of material). I'm not certain of the 'woolly' bit.
'primordial pouch hides from below' is the wordplay.
'hides' indicates a hidden word.
'from below' shows that the letters should be reversed in order (in a down clue, letters go up).
'dialp' is hidden in the letters of 'primordial pouch'.
'dialp' reversed gives 'PLAID'.
Can you help me to learn more?
(Other definitions for plaid that I've seen before include "Scottish Highland fabric" , "Check fabric" , "Scotsman's cloth" , "Tartan-pattern cloth" , "Tartan cloth, part of Highland dress" .)