Crow

noun

1. A bird, usually black, of the genus Corvus, having a strong conical beak, with projecting bristles; it has a harsh, croaking call.
2. The cry of the rooster.
3. Any of various dark-coloured nymphalid butterflies of the genus Euploea.
4. A bar of iron with a beak, crook, or claw; a bar of iron used as a lever; a crowbar.
5. A gangplank (corvus) used by the Ancient Roman navy to board enemy ships.