blowhole

Definitions of blowhole
  1. noun
    a hole for the escape of gas or air
    synonyms: vent, vent-hole, venthole
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    types:
    smoke hole
    a vent (as in a roof) for smoke to escape
    type of:
    hole
    an opening deliberately made in or through something
  2. noun
    the spiracle of a cetacean located far back on the skull
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    type of:
    spiracle
    a breathing orifice
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