Definitions
1.nounA horizontal door in a floor or ceiling.
2.nounA trapdoor.
3.nounAn 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."
4.nounA small door in large mechanical structures and vehicles such as aircraft and spacecraft often provided for access for maintenance.
5.nounAn opening through the deck of a ship or submarine
6.nounA gullet.
7.nounA frame or weir in a river, for catching fish.
8.nounA floodgate; a sluice gate.
9.nounA bedstead.
10.nounAn opening into, or in search of, a mine.
11.verbTo close with a hatch or hatches.
12.nounThe act of hatching.
13.nounDevelopment; disclosure; discovery.
14.noun(poultry) A group of birds that emerged from eggs at a specified time."These pullets are from an April hatch."
15.noun(often as mayfly hatch) The phenomenon, lasting 1–2 days, of large clouds of mayflies appearing in one location to mate, having reached maturity.
16.nounA birth, the birth records (in the newspaper) — compare the phrase "hatched, matched, and dispatched."
17.verb(of young animals) To emerge from an egg.
18.verb(of eggs) To break open when a young animal emerges from it.
19.verbTo incubate eggs; to cause to hatch.
20.verbTo devise.
21.verbTo shade an area of (a drawing, diagram, etc.) with fine parallel lines, or with lines which cross each other (cross-hatch).
22.verbTo cross; to spot; to stain; to steep.