n. /fawr"pohl', fohr"-/ ; v. /fawr pohl", fohr-/ , n. , v. , forepoled, forepoling . Mining.
n.
1. Also called spile, spill . any of a number of boards or timbers driven forward on top of a set to protect miners lengthening a tunnel from falling debris.
v.t.
2. to reinforce (the end of an excavated tunnel) with forepoles.
[ 1870-75, Amer.; FORE- + POLE 1 ]