What is "chimney board"

Chimney \Chim"ney\, n.; pl. Chimneys. [F. chemin['e]e, LL. caminata, fr. L. caminus furnace, fireplace, Gr. ? furnace, oven.]

1. A fireplace or hearth. [Obs.]
   --Sir W. Raleigh.

2. That part of a building which contains the smoke flues; esp. an upright tube or flue of brick or stone, in most cases extending through or above the roof of the building. Often used instead of chimney shaft.

   Hard by a cottage chimney smokes.
   --Milton.

3. A tube usually of glass, placed around a flame, as of a lamp, to create a draft, and promote combustion.

4. (Min.) A body of ore, usually of elongated form, extending downward in a vein. --Raymond. Chimney board, a board or screen used to close a fireplace; a fireboard. Chimney cap, a device to improve the draught of a chimney, by presenting an exit aperture always to leeward. Chimney corner, the space between the sides of the fireplace and the fire; hence, the fireside. Chimney hook, a hook for holding pats and kettles over a fire, Chimney money, hearth money, a duty formerly paid in England for each chimney. Chimney pot (Arch.), a cylinder of earthenware or sheet metal placed at the top of a chimney which rises above the roof. Chimney swallow. (Zo["o]l.)

   1. An American swift ( Ch[ae]ture pelasgica) which lives in chimneys.

   2. In England, the common swallow ( Hirundo rustica).

      Chimney sweep, Chimney sweeper, one who cleans chimneys of soot; esp. a boy who climbs the flue, and brushes off the soot.