
• (v. t.) Lying on its side; thus, a chevron couche is one which emerges from one side of the escutcheon and has its apex on the opposite side, or at the fess point. • (v. t.) Not erect; inclined; -- said of anything that is usually erect, as an escutcheon.
Found on
http://thinkexist.com/dictionary/meaning/couche/

Cou`ché' adjective [ French, past participle of coucher . See Couch , transitive verb ] (Her.) (a) Not erect; inclined; -- said of anything that is usually erect, as an escutcheon. (b) Lying on its side; thus, a chevron couché
Found on
http://www.encyclo.co.uk/webster/C/170

In heraldry, couche refers to a suspended shield, generally represented hanging by the sinister-chief angle. Shields couche are often used in Seals.
Found on
http://www.probertencyclopaedia.com/browse/UC.HTM

heavy linen fabric used to hold formed loaves for proofing. The fabric can be pleated around the loaves to help them hold their shape.
Found on
http://www.thefreshloaf.com/faqs/glossary

(of an escutcheon) depicted in a diagonal position, the sinister chief uppermost.
Found on
https://www.infoplease.com/dictionary/couche

Heavy linen fabric used to hold formed loaves for proofing. The fabric can be pleated around the loaves to help them hold their shape.
Found on
https://www.weekendbakery.com/bread-baking-glossary/
No exact match found.