Stray club found on beach (9)
I believe the answer is:
driftwood
'on beach' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'stray club' is the wordplay.
'stray' becomes 'drift' (synonyms).
'club' becomes 'wood' (wood is a kind of club).
'drift'+'wood'='DRIFTWOOD'
'found' is the link.
Can you help me to learn more?
(Other definitions for driftwood that I've seen before include "remains ashore" , "Timber, etc, on the sea" , "box, perhaps left by water" , "items washed up?" , "found washed up on a beach?" .)