Brattice

from WordNet (r) 3.0 (2006)

brattice
    n 1: a partition (often temporary) of planks or cloth that is
         used to control ventilation in a mine
    v 1: supply with a brattice, to ventilate mines

from The Collaborative International Dictionary of English v.0.48

Brattice \Brat"tice\, n. [See {Brettice}.] (Mining)
   (a) A wall of separation in a shaft or gallery used for
       ventilation.
   (b) Planking to support a roof or wall.
       [1913 Webster]

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