Quote sense in speech (4)
I believe the answer is:
cite
'quote' is the definition.
(I know that quote can be written as cite)
'sense in speech' is the wordplay.
'sense' becomes 'sight' (sight or vision is a sense).
'in speech' shows a homophone (sound like).
'sight' is a homophone of 'CITE'.
(Other definitions for cite that I've seen before include "Quote as an example or in support" , "Quote (eg, a book)" , "name" , "Summons - quote" , "Summon - quote" .)