Shelter's sediment? (4)
I believe the answer is:
lees
'shelter's sediment?' is the definition.
'lees' can be an answer for 'sediment?' (lees is a kind of sediment). I am unsure of the 'shelter's' bit.
'shelter's sediment?' is the wordplay.
'shelter' becomes 'lee' (as in lee side, the side sheltered from wind).
'sediment?' becomes 's' (this could be a standard abbreviation which I don't know about).
'lee'+'s'='LEES'
Can you help me to learn more?
(Other definitions for lees that I've seen before include "Deposit" , "Sediment from wine or beer production" , "Sediment that settles at the bottom of wine" , "Eels found in sediment" , "Wine at bottom of glass" .)