tiān​huā​bǎn

ceiling

天花板 tiān​huā​bǎn
ceiling noun
the overhead interior surface that bounds the upper limit of a room

A magnificent crystal chandelier hangs from the ceiling of the room.

pinnacle noun
slang for the absolute best or highest level achievable in a specific field

The special effects in this movie are the absolute pinnacle for domestic sci-fi films.

upper limit noun
a figurative maximum point or cap, such as a career glass ceiling

His career in this industry seems to have hit a glass ceiling.

Frequency

Movie subtitles
6.98 per million appears in 3% of films
Written text
3.97 per million

Sources

Definitions
CC-CEDICT