Astel

• (n.) An arch, or ceiling, of boards, placed over the men`s heads in a mine.
Found on http://thinkexist.com/dictionary/meaning/astel/

Astel

As'tel (ăs'tẽl) noun [ Middle English astelle piece of wood, Old French astele splinter, shaving, French attelle , astelle : confer Latin astula , dim. of assis board.] (Mining) An arch, or ceiling, of boards, placed over the men's heads in...
Found on http://www.encyclo.co.uk/webster/A/135
No exact match found