Pli

French-English Dictionary of Military Terms · 1918 · p. 3

Fold, crease. Envelope. Written me age, chit. Coil of rope. Seam (soldered, etc.). Joint (of bit)—Pli de terrain. Fold in the ground.—Sous pli. In an envelope.—Sous pli secret. In an envelope marked “secret.” [p.444]