ROACH, n. A fish of the genus Cyprinus, found in fresh water, easily caught and tolerably good for food. As sound as a roach, is a phrase supposed to have been originally, as sound as a rock.

roach is also found in 3 definitions:

· DACE, n. A fish, the Cyprinus leuciscus; a small river fish, resembling the roach.

·
 G`ARDON, n. A fish of the roach kind.

· ROCH'ET, n. A surplice; the white upper garment of a priest worn while officiating.

· ROCH'ET, n. A fish, the roach, which see.