Couche

Bed. Layer, stratum, seam. Layer or apron of logs buried in earth above dug-out, to burst shells. Deck (of double decked or treble-decked gun platform). Butt end of rifle. Coat of paint or plaster. Premiére couche. Priming (or paint). Plaque de couche. Butt-plate—Couche d’éclatement. Apron or layer of cement, plates, etc., to burst shel] short of the roof (of casemates and dug-outs). [p.151]