Spots, or what's said to be spots (5)
I believe the answer is:
sites
'spots' is the definition.
(spot can mean a site or location)
'what's said to be spots' is the wordplay.
'what's said' shows a homophone (sound like).
'to be spots' becomes 'sights' (sight can mean to spot or observe).
'sights' sounds like 'SITES'.
'or' acts as a link.
(Other definitions for sites that I've seen before include "Spots" , "Locates" , "Locations or positions, as for building" , "places" , "Is set (anag)" .)