plural of Icelandic raven

Having hair that is very black and lustrous.

A common raven, Corvus corax.

A large all-black passerine bird in the crow family, Corvus corax. / A dark-colored South Asian swallowtail butterfly, Papilio castor

A bird active at night, sometimes identified with a specific species such as a night owl or nightjar, and sometimes seen as a separate animal in its own right.

An American cottoid fish, Hemitripterus americanus, allied to the sculpins. / Any fish in the family Hemitripteridae. / The cormorant.

A kind of high-quality sailcloth.

Hempel's paradox

A messenger or news-bringer who takes too long to arrive.

plural of raven-messenger