• (mining) An opening into, or in search of, a mine.
  • The act of hatching.
  • (often as mayfly hatch) The phenomenon, lasting 1-2 days, of large clouds of mayflies appearing in one location to mate, having reached maturity.
  • An opening in a wall at window height for the purpose of serving food or other items. A pass through.

    "The cook passed the dishes through the serving hatch."

  • (slang) A gullet.
  • (Scotland) A bedstead.
  • (poultry) A group of birds that emerged from eggs at a specified time.

    "These pullets are from an April hatch."

  • A trapdoor.
  • An opening through the deck of a ship or submarine.
  • A floodgate; a sluice gate.
  • Development; disclosure; discovery.
  • A horizontal door in a floor or ceiling.
  • (informal) A birth, the birth records (in the newspaper) — compare the phrase "hatched, matched, and dispatched."
  • A small door in large mechanical structures and vehicles such as aircraft and spacecraft often provided for access for maintenance.
  • A frame or weir in a river, for catching fish.


  • (intransitive) (of eggs) To break open when a young animal emerges from it.
  • (transitive, obsolete) To cross; to spot; to stain; to steep.
  • (intransitive) (of young animals) To emerge from an egg.
  • (transitive) To devise.

    "to hatch a plan or a plot; to hatch mischief or heresy"

  • (transitive) To shade an area of (a drawing, diagram, etc.) with fine parallel lines, or with lines which cross each other (cross-hatch).
  • (transitive) To close with a hatch or hatches.
  • (transitive) To incubate eggs; to cause to hatch.

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