pitprop

from WordNet (r) 3.0 (2006)
pitprop
    n 1: a wooden prop used to support the roof of a mine [syn:
         {pitprop}, {sprag}]
from The Collaborative International Dictionary of English v.0.48
pitprop \pit"prop\ n.
   A wooden prop used to support the roof of a mine temporarily.
   [WordNet 1.5]
from The Collaborative International Dictionary of English v.0.48
pitprop \pit"prop\ n.
   A wooden prop used to support the roof of a mine temporarily.
   [WordNet 1.5] pits
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