Drooling one featured in Deliverance (10)
I believe the answer is:
salivation
'drooling one featured in deliverance' is the definition.
I can't tell whether this defines the answer.
'one featured in deliverance' is the wordplay.
'one' becomes 'i' (Roman numeral).
'featured in' is an insertion indicator.
'deliverance' becomes 'salvation' (salvation is a kind of deliverance).
'i' put into 'salvation' is 'SALIVATION'.
Can you help me to learn more?
(Other definitions for salivation that I've seen before include "Sign of anticipation" , "sign of hunger" , "preparation for eating" , "Signs of expecting lunch" .)