chew up
 chew up [  phrasal verb  ]
  chew (something) up or chew up (something)
  1 : to destroy (something) by chewing it
   My new puppy chewed up my shoes.
  2 informal : to destroy or defeat (someone or something)
   The truck chewed up the grass.
   The gears got all chewed up.
   They chewed up the competition.
   Don't mess with her–she'll chew you up and spit you out.
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 Main Entry: chew