What does "ravenous" mean?

Ravenous: Eager for prey or gratification; as, a ravenous appetite or desire. -- Rav"en*ous*ly, adv. -- Rav"en*ous*ness, n. RAVEN'S-DUCK Ra"ven's-duck`, n. Etym: [Cf. G. ravenstuch.] A fine quality of sailcloth. Ham. Nav. Encyc.

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