Pronunciation: (pī'nap"ul),[key] —n. 1. the edible, juicy, collective fruit of a tropical, bromeliaceous plant, Ananas comosus, that develops from a spike or head of flowers and is surmounted by a crown of leaves.
2. the plant itself, having a short stem and rigid, spiny-margined, recurved leaves.
3. Mil. Slang.a fragmentation hand grenade.