1. n. An item of furniture, often upholstered, for the comfortable seating of more than one person.
2. n. A bed, a resting-place.
3. n. (art, painting and gilding) A preliminary layer, as of colour or size.
4. n. (brewing) A mass of steeped barley spread upon a floor to germinate, in malting; or the floor occupied by the barley.
a couch of malt
5. v. To lie down; to recline (upon a couch or other place of repose).
6. v. (archaic) To lie down for concealment; to conceal, to hide; to be concealed; to be included or involved darkly or secretly.
7. v. To bend the body, as in reverence, pain, labor, etc.; to stoop; to crouch.
8. v. To lay something upon a bed or other resting place.
9. v. To arrange or dispose as if in a bed.
10. v. To lay or deposit in a bed or layer; to bed.
11. v. To lower (a spear or lance) to the position of attack.
12. v. (ophthalmology, transitive) In the treatment of a cataract in the eye, to displace the opaque lens with a sharp object such as a needle. The technique is regarded as largely obsolete.
13. v. (paper-making, transitive) To transfer (for example, sheets of partly dried pulp) from the wire mould to a felt blanket for further drying.
14. v. (sewing, transitive) To attach a thread onto fabric with small stitches in order to add texture.
15. v. To phrase in a particular style; to use specific wording for.
He couched it as a request, but it was an order.
16. n. couch grass, Couch grass, a species of persistent grass, Elymus repens, usually considered a weed.