feed (up)on (someone or something)

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feed (up)on (someone or something)

Literally, to eat or consume something for sustenance. Ugh, as soon as I go outside, I feel like the mosquitos are just feeding on me!
See also: feed
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

feed (up)on someone or something

to eat someone or something. (Upon is formal and less commonly used than on.) They say that some Bengal tigers feed upon people. They feed on anything that moves.
See also: feed, on
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

feed on

v.
To be nourished or sustained by something. Used especially of animals: Pigs feed on corn husks.
See also: feed, on
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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References in periodicals archive ?
Changes have been most rapid for many organisms at the bottom of food chains, such as plants and the animals that feed upon them.
Samples of material trapped in vents below the flagged floors of the granaries are expected to reveal the nature of the foodstuffs and other goods once stored in the buildings, together with the bones of rodents that attempted to feed upon them.