Untidy edges by the lake? (5)
I believe the answer is:
sedge
'the lake?' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'untidy edges' is the wordplay.
'untidy' indicates an anagram.
'edges' with letters rearranged gives 'SEDGE'.
'by' is the link.
Can you help me to learn more?
(Other definitions for sedge that I've seen before include "Grass-like plant growing in wet places" , "Coarse, grasslike plant" , "Grass-like plant growing in marshes" , "Plant like grass" , "Marsh grass" .)