Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- transitive verb To provide or cover with a ceiling.
- transitive verb Nautical To provide (a ship) with interior planking or lining.
from The Century Dictionary.
- noun A canopy of state.
- To canopy; provide with a canopy or hangings.
-     To overlay or cover the interior upper surface of (a room or building) with wood, plaster, cloth, or other material. See ceiling , 2.
- To wainscot; also, by extension, to floor.
from the GNU version of the Collaborative International Dictionary of English.
- transitive verb To overlay or cover the inner side of the roof of; to furnish with a ceiling.
- transitive verb To line or finish a surface, as of a wall, with plaster, stucco, thin boards, or the like.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- verb To line or finish a surface, as of a wall, with plaster, stucco, thin boards, or the like.
- noun poetic  a ceiling 
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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								"We're locked in some kind of holding ceil, probably awaiting orders." Finnegan teoriza la practica de cuerdas Carlos G.Tonda 2010 
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								The owls knew how to launch their bombs upward against an opponent pinned against the ceil - ing, so "upsmanship" was not the only strategy. 
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								All modern CPUs have built-in round, ceil, and floor functions and typically their behaviors are configurable though you may have to operate at the assembly level. 
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								Net languages, the round function by default rounds towards zero ie floor when +ve, ceil when -ve. 
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								Most newer CPUs have various built in functions for round, floor and ceil all of which are variants of the standard round we all know. 
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								From dirty flock bedding, drip dropping through the ceil — ing, with two sisters of charities on the front steps and three eva — cuan cleansers at the back gaze, single box and pair of chairs Finnegans Wake 2006 
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								Buried in the ceil-ing, dehumidifiers hummed efficiently, working around the clock to give the station's living quarters the desic-cated feel of the deserts of home. The Howling Stones Foster, Alan Dean, 1946- 1997 
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								Eight dormer * ndows jutted out of the sloped ceil - the secret sense Tan, Amy 1995 
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								The creatures had no visible teeth, and clung to the ceil-ing of the shelter with six stubby legs. Mid Flinx Foster, Alan Dean 1995 
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								He found himself in a bright two-bedroom apartment with typically low ceil - ings and small rooms. Second Skin Lustbader, Eric 1995 
bilby commented on the word ceil
"MYRRHINA: My chamber is ceiled with cedar and odorous with myrrh."
- Oscar Wilde, 'La Sainte Courtisane'.
June 6, 2009