Roofer left pair of trousers in a heap on first floor (8)
I believe the answer is:
upstairs
'roofer left' is the definition.
Both the answer and definition are adjectives. Maybe they are linked in a way I don't understand?
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for upstairs that I've seen before include "Above ground floor" , "on another level" , "Having taken steps to rise" , "On the next floor" , "flight" .)