1) Adjourned 2) Concave 3) Hollow 4) Sunken 1) Below the surface 2) Deep-set 3) Discontinued activity 4) Having a sunken area 5) Hollow 6) In an alcove 7) Indented 8) Like a niche 9) Like alcoves and nooks 10) Like an alcove 11) Put in an alcove 12) Resembling an alcove 13) Set back in at wall 14) Sunken 15) Took a break 16) Took a break, Senate-style 
• (a.) Having a recess or recesses; as, a recessed arch or wall. • (imp. & p. p.) of Recess • (a.) Withdrawn; secluded.
See Built-in.
Re·cessed' (re*sĕst') adjective 1. Having a recess or recesses; as, a recessed arch or wall. 2. Withdrawn; secluded. [ R.] 'Comfortably recessed from curious impertinents.' Miss Edgeworth. Recessed arch (Architecture) , 
In Smith & Wesson parlance, a revolver cylinder whose chambers have been counterbored to accept the cartridge's rims---the base of the cartridges then resting flush with the rear of the cylinder. In later guns, the expense of counterboring the chambers has largely been deleted. All other things being equal, most people would rather have a revolver ...
[adj] - resembling an alcove
See Built-in.
adjective resembling an alcove