Rain lightly on the rotisserie (4)
I believe the answer is:
spit
This could be a double definition.
'rain lightly' is the first definition.
'spit' can be an answer for 'rain' (spitting is a kind of raining). I'm not sure about the 'lightly' bit.
'the rotisserie' is the second definition.
(I've seen this before)
'on' acts as a link.
Can you help me to learn more?
(Other definitions for spit that I've seen before include "Long, narrow point" , "Thin metal spike to hold roasting meat" , "Gob" , "Skewer; headland" , "Spade-depth; rain very lightly" .)