Origin uncertain; perhaps related to Latin cēlō (“to hide”).
ceil (third-person singular simple present ceils, present participle ceiling, simple past and past participle ceiled)
- (transitive) To line or finish (a surface, such as a wall), with plaster, stucco, thin boards, or similar.
- (mathematics) To set a higher bound.
Borrowed from French ciel (“heavens”), from Latin caelum.
ceil (plural ceils)
- (poetic) a ceiling
- (mathematics) Abbreviation of ceiling.