Show contempt for skewer (4)
I believe the answer is:
spit
I believe this is a double definition.
'show contempt' is the first definition.
(I've seen this before)
'skewer' is the second definition.
(spit is a kind of skewer)
'for' acts as a link.
(Other definitions for spit that I've seen before include "Narrow strip of land projecting into the sea" , "cook a roast?" , "Show disdain" , "Sand bar" , "Coastal feature, tongue of sand" .)