A scaffold for resting upon a slanting roof while shingling, slating, repairing, or painting.
The barbed rod is thrust up beneath a course of shingles, and the barbs hold in the course both above and below.
The claw-plate holds to the top of the roof, and serves, with the barbed rod, to hold the plank to which the bracket is hinged and braced.
The framework of a roof, consisting of thrust and tie pieces.
（Bakery.) A tool like the letter L, used for withdrawing ashes from the oven.
（Mining.) The worked space in a mine, especially of a coal-mine, where the roof is supported by regular pillars.
The whole winning is thus said to be worked with pillar and room, or post and stall, — the same thing.
Thirlings are worked spaces connecting rooms, and the cutting of the thirlings changes a wall to a row of pillars.
Room and space staff.
（Shipbuilding.) A long measu