莢 - pod, hull, husk

legume; legumen; leguminous plant

snow pea; mangetout

cartridge case

linden arrowwood (Viburnum dilatatum); Japanese bush cranberry

ejector tube; ejector housing (revolver)

spent shell casing; empty cartridge

green beans; French beans; string beans

Wright viburnum (viburnum wrightii)

(bacterial) capsule

pod (e.g. a pea pod); shell; hull

honey locust (Gleditsia japonica)

ejection (of spent shell casings)