Add to enclosure (8)

I believe the answer is:

compound

I believe this clue is a double definition.

'add to' is the first definition.
(thesaurus)

'enclosure' is the second definition.
(compound is a kind of enclosure)

(Other definitions for compound that I've seen before include "Kind of interest accumulating on capital plus interest" , "Combination of elements - make worse - fenced-in area" , "POW camp" , "Blended substance - enclosed area" , "Exacerbate - enclosure" .)

I've seen this clue in The Telegraph.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.