roach-backed

== English == === Etymology === From roach +‎ backed. === Adjective === roach-backed (comparative more roach-backed, superlative most roach-backed) (archaic, of a horse or dog) Having a convex back rather than a concave one. ==== Related terms ==== roachback === References === “roach-backed”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.