1. A tropical american plant (ananas comosus) having large swordlike leaves and a large, fleshy, edible, multiple fruit with a terminal tuft of leaves.
2. the fruit of this plant.
3. slang A hand grenade.

1. A tropical plant, ananas comosus, native to south america, having thirty or more long, spined and pointed leaves surrounding a thick stem.
2. the ovoid fruit of the pineapple plant, which has very sweet white or yellow flesh, a tough, spiky shell and a tough, fibrous core.
3. A hand grenade.
4. an australian fifty dollar note.

1. A tropical plant (Ananassa sativa); also, its fruit; -- so called from the resemblance of the latter, in shape and external appearance, to the cone of the pine tree. its origin is unknown, though conjectured to be american.

1. the cone or strobilus of the pine; a pine-cone.
2. the fruit of ananas (Ananassa) sativa: so called from its resemblance to a pine-cone.
3. the plant ananas sativa, a native of tropical south america, now widely cultivated and naturalized throughout the tropics.
4. A fish of the family Diodontidæ, a kind of porcupine-fish, Chilomycterus geometricus: so called from the prickly skin and the shape when inflated.

1. a tropical american plant bearing a large fleshy edible fruit with a terminal tuft of stiff leaves; widely cultivated in the tropics
2. large sweet fleshy tropical fruit with a terminal tuft of stiff leaves; widely cultivated