subceilings

/sʌbˈsilɪŋz/
noun
  1. A ceiling that is below another ceiling, often used to hide pipes, wires, or to improve acoustics.
    • The contractor recommended subceilings for the basement to keep the wiring out of sight.
    • In the old theater, the subceilings helped reduce echo during performances.
    • The office installed subceilings to conceal the air conditioning ducts.
Antonyms
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