Definitions
from The Century Dictionary.
- noun A ceiling of boards overhead in a mining-drift, designed to protect the men when at work from falling rocks.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Mining) An arch, or ceiling, of boards, placed over the men's heads in a mine.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mining An
arch orceiling ofboards placed above the workers' heads in amine .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
Old English astelle piece of wood, Old French astele splinter, shaving, French attelle, astelle: compare Latin astula, diminutive of assis board.
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Examples
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Lettre critique de Monsieur **** à Monsieur *** sur le traité de mathématique du P.C. [astel] et les extraits qu'il a faits dans le journaux des Mémoires de l'Académie des Sciences de l'année 1725.
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Some media, such as charcoal andp astel, can be blended to create intermediate intensities and colors.
Citizendium, the Citizens' Compendium - Recent changes [en] 2009
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