Pineapple is the common name for a tropical plant

Plant

Plants are living organisms belonging to the kingdom Plantae. Precise definitions of the kingdom vary, but as the term is used here, plants include familiar organisms such as trees, flowers, herbs, bushes, grasses, vines, ferns, mosses, and green algae. The group is also called green plants or...

 and its edible fruit

Fruit

In broad terms, a fruit is a structure of a plant that contains its seeds.The term has different meanings dependent on context. In non-technical usage, such as food preparation, fruit normally means the fleshy seed-associated structures of certain plants that are sweet and edible in the raw state,...

, which is actually a multiple fruit

Multiple fruit

Multiple fruits are fruits that are formed from a cluster of flowers . Each flower in the inflorescence produces a fruit, but these mature into a single mass...

 consisting of coalesced berries. It was given the name pineapple due to its resemblance to a pine cone. The pineapple is by far the most economically important plant in the Bromeliaceae

Bromeliaceae

Bromeliaceae is a family of monocot flowering plants of around 3,170 species native mainly to the tropical Americas, with a few species found in the American subtropics and one in tropical west Africa, Pitcairnia feliciana...

. Besides being produced for consumption, it can be grown as an ornamental or houseplant, obtained from the crown of a supermarket fruit.