Mirror in Quebec house (4)
I believe the answer is:
echo
'mirror' is the definition.
(thesaurus)
'in quebec house' is the wordplay.
'in' says the answer is hidden in the clue.
'ECHO' is hidden in the letters of 'quebec house'.
(Other definitions for echo that I've seen before include "Greek nymph, spurned by Narcissus, who pined away until only her voice remained" , "Bounced sound" , "Reflect in Czechoslovakia" , "Comms code word for E" , "Sound returning some moments later" .)