a small opening in a floor, wall, or roof allowing access from one area to another

a cargo hatch

(of an egg) open and produce a young animal

eggs need to be put in a warm place to hatch

conspire to devise (a plot or plan)

the little plot that you and Sylvia hatched up last night

a newly hatched brood

a hatch of mayflies

(in fine art and technical drawing) shade (an area) with closely drawn parallel lines

the unused space has been hatched with lines