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blade noun

  /bleɪd/
  • The (typically sharp-edged) part of a knife, sword, razor, or other tool with which it cuts.
  • The flat functional end or piece of a propeller, oar, hockey stick, chisel, screwdriver, skate, etc.
  • Thin plate, foil.
  • (mathematics) An exterior product of vectors. (The product may have more than two factors. Also, a scalar counts as a 0-blade, a vector as a 1-blade; an exterior product of k vectors may be called a k-blade.)
 blad
  • (biology) The four large shell plates on the sides, and the five large ones of the middle, of the carapace of the sea turtle, which yield the best tortoise shell.
 klinge