Crossword Genius

Roofing material poisonous thing? Stop! (7)

Ross

I believe the answer is:

asphalt

'roofing material' is the definition.
(I've seen this before)

'poisonous thing? stop' is the wordplay.
'poisonous thing?' becomes 'asp' (poisonous snake).
'stop' becomes 'halt' (synonyms).
'asp'+'halt'='ASPHALT'

(Other definitions for asphalt that I've seen before include "Road surface material" , "Bituminous substance used for roofs and roads" , "Bituminous substance used in building" , "Paving material" , "petroleum residue" .)

I've seen this clue in The Times.
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.