In the Hebrides, it's intoxicating! (3)
I believe the answer is:
rum
'in' is the definition.
Both the answer and definition are adjectives. Perhaps you can see an association between them that I don't see?
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for rum that I've seen before include "Unusual" , "Weird" , "Curious, strange" , "Odd kind of drink for sailor" , "Funny" .)