Bulge (5)
'bulge' is the definition.
(I know that bulge is a kind of swell)
This is the entire clue.
(Other definitions for swell that I've seen before include "part of organ" , "Person of high social standing" , "Bulge; a toff" , "Expand - big wig" , "Become larger in size" .)
'bulge' is the definition.
(synonyms)
This is all the clue.
(Other definitions for protuberance that I've seen before include "Bit jutting out" , "Something sticking out" , "Swelling" , "Something that sticks out" , "Outward bulge - not cupbearer (anag)" .)