Noun hamburger has 2 senses
  1. hamburger, beefburger - a fried cake of minced beef served on a bun
    --1 is a kind of sandwich
    --1 has parts: ground beef, hamburger
    --1 has particulars: cheeseburger
  2. ground beef, hamburger - beef that has been ground
    --2 is a kind of beef, boeuf
    --2 is a part of hamburger, beefburger
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