a. Her. [Fr.; pa. pple. of coucher to lie, COUCH.] Said of a shield suspended by the sinister corner so as to hang in a slanting position; also = COUCHED b.
172731. Bailey, vol. II. Couché (in Heraldry) denotes any thing lying along, as a Chevron couché signifies a Chevron lying sideways.
1864. Boutell, Heraldry Hist. & Pop., iii. (ed. 3), 16.