Here is the meaning of the word, PEA

Pea ( n. ) - A name given, especially in the Southern States, to the seed of several leguminous plants (species of Dolichos, Cicer, Abrus, etc.) esp. those having a scar (hilum) of a different color from the rest of the seed.
Pea ( n. ) - A plant, and its fruit, of the genus Pisum, of many varieties, much cultivated for food. It has a papilionaceous flower, and the pericarp is a legume, popularly called a pod.
Pea ( n. ) - See Peak, n., 3.
Pea ( n. ) - The sliding weight on a steelyard.