steel trap

Definitions of steel trap
  1. noun
    a trap made of steel with a strong spring and sharp toothlike projections to hold the prey
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    type of:
    trap
    a device in which something (usually an animal) can be caught and penned
  2. noun
    an acute intelligence (an analogy based on the well-known sharpness of steel traps)
    “he's as sharp as a steel trap
    “a mind like a steel trap
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    type of:
    acuity, acuteness, keenness, sharpness
    a quick and penetrating intelligence
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