Wide as a lake (5)
I believe the answer is:
broad
'wide' is the definition.
(synonyms)
'a lake' is the wordplay.
I cannot quite see how this works, but
'a' is present in the answer.
The remaining letters 'brod' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'as' is the link.
Can you help me to learn more?
(Other definitions for broad that I've seen before include "dame" , "Covering a wide range" , "Board (anag.)" , "Without detail; wide" , "not detailed" .)