coucher /ˈkaʊt͡ʃə(ɹ)/ noun4 •One who couches. •One who couches paper. •The book in which a corporation or other body registers its particular acts.bookes, and specially of Grayles, Couchers, Legends, Processionailes[…] — 1559 •(UK, no longer used) A factor or agent resident in a country for traffic.She [the Herring-Buss] imployeth[…]at Land Viewers, Packers,[…]Couchers to make the Herrings lawful Merchandizes. — 1601 formscouchers