Astel
Pronunciation : As"tel
Part of Speech : n.
Etymology : [OE. astelle piece of wood, OF. astele splinter, shaving, F. attelle, astelle: cf. L. astula, dim. of assis board.] (Mining)
Definition : Defn: An arch, or ceiling, of boards, placed over the men's heads in a mine.
Source : Webster's Unabridged Dictionary, 1913