Kind of chamber (4)
I believe the answer is:
echo
'kind of chamber' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for echo that I've seen before include "Mythical nymph" , "ring" , "call back" , "Greek nymph, spurned by Narcissus, who pined away until only her voice remained" , "In The Maid of the Mountains" .)