Alcohol (7)
'alcohol' is the definition.
(I know that alcohol can be written as ethanol)
This is the entire clue.
(Other definitions for ethanol that I've seen before include "volatile flammable substance" , "spirit" , "Intoxicant in wine, spirits, etc" , "Kind of alcohol - not hale (anag)" , "porter uses it" .)
'alcohol' is the definition.
(ethyl alcohol is a kind of alcohol)
This is all the clue.
(Other definitions for ethyl that I've seen before include "-- Alcohol; -- acetate" , "Alkyl radical, base of common alcohol" , "compound" , "C2H5" .)