ravenous derives from the Late Latin rapinare meaning to plunder, which in turn derived from the Latin rapire, meaning to seize, which also gave rise to the English words, ravish, rape and rapid. Perhaps surprisingly, ravenous is not related to raven, the name of a large, black bird, but confusion of the two words may have contributed to the bird's reputation as a thief.

Finally, lucrate, meaning to eat ravenously also derives from a Latin source: lucare, meaning to eat like a glutton.

From: Cupboard Love: A Dictionary of Culinary Curiosities