"to produce young from eggs by incubation," from M.E. hachen (mid-13c.), probably from O.E. *hæccan, of unknown origin. Hatchery is first recorded 1880.
O.E. hæc (gen. hæcce) "fence, gate," from P.Gmc. *khak- (cf. M.H.G. heck, Du. hek "fence, gate"). Sense of "plank opening in ship's deck" is first recorded mid-13c. Drinking phrase down the hatch first recorded 1931. Hatchback as a type of rear door of an automobile is from 1970.