Void described by bard (4)
I believe the answer is:
ovid
'bard' is the definition.
(I know this)
'void described' is the wordplay.
'void' anagrams to 'OVID'.
But, I'm unsure how the anagram is indicated.
'by' acts as a link.
Can you help me to learn more?
(Other definitions for ovid that I've seen before include "Roman poet N void (anag)" , "Roman poet, d. about AD17" , "Void for a Latin poet" , "Writer" , "Void for old Roman poet" .)