Roach1. (n.) A cockroach.
2. (n.) A European fresh-water fish of the Carp family (Leuciscus rutilus). It is silver-white, with a greenish back.
3. (n.) An American chub (Semotilus bullaris); the fallfish.
4. (n.) The redfin, or shiner.
5. (n.) A convex curve or arch cut in the edge of a sail to prevent chafing, or to secure a better fit.
6. (v. t.) To cause to arch.
7. (v. t.) To cut off, as a horse's mane, so that the part left shall stand upright.
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