ceiling

ceiling /ˈsiːlɪŋ/ noun
plural ceilings
ceiling
/ˈsiːlɪŋ/
noun
plural ceilings
Britannica Dictionary definition of CEILING
[count]
1 
: the inside surface at the top of a room
— sometimes used figuratively — opposite floor
2 
: an upper limit — usually singular
— opposite floor; see also glass ceiling
3 
technical : the greatest height at which an aircraft can fly

hit the ceiling

— see 1hit

— ceilinged

adjective
— used in combination