Without bubbles (4)
I believe the answer is:
flat
(Other definitions for flat that I've seen before include "Boring - apartment" , "Prostrate" , "Pied-a-terre" , "Dull; set of rooms" , "not deep?" .)
I believe the answer is:
flat
(Other definitions for flat that I've seen before include "Boring - apartment" , "Prostrate" , "Pied-a-terre" , "Dull; set of rooms" , "not deep?" .)