Definition: "swelters"

This is an anagram - look for an indicator word that suggests mixing or rearranging letters

'Goes off' is the anagram indicator. Take the word 'round' and add the center letter of 'Damascus' (which is 'a'), then rearrange all these letters

Answer: ROASTS | 'Goes off' indicates anagram - rearrange 'round' + 'a' (centre of Damascus) = ROASTS