A terrible noise coming from the landing (3)
I believe the answer is:
din
'a terrible noise' is the definition.
(a din is a noisy disturbance)
'coming from the landing' is the wordplay.
'coming from' indicates a hidden word.
'DIN' can be found hidden inside 'landing'.
(Other definitions for din that I've seen before include "Clamour" , "speed in film" , "Distracting noise" , "'Loud, harsh noise (3)'" , "Unwanted noise" .)