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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.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
To be nourished or sustained by something. Used especially of animals: Pigs feed on corn husks.
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.