Groundnut

Part of speech: noun

Definitions

1. A legume plant that produces edible seeds in underground pods, commonly known as peanut
2. A species of leguminous plant that bears edible seeds within subterranean pods, often recognized as a source of culinary peanuts
3. A type of legume that yields edible seeds contained in pods buried underground, which are popularly referred to as peanuts

Etymology: "Groundnut" is a plain compound: "ground" plus "nut," describing a plant whose edible seeds develop in pods that ripen underground. The name reflects a notable botanical habit. The flowers of the peanut plant are pollinated above ground, but after fertilization the stalk bends downward and drives the developing pod into the soil, where the seeds mature. The same idea appears across several European languages. Icelandic "jarðhneta," German "Erdnuss," and Hungarian "földimogyoró" all combine words for earth or ground with a word for nut, so English is following a common pattern. Its close relative "earthnut" uses the same logic with "earth" in place of "ground," and the two words have long been used interchangeably for this plant.

Synonyms: peanut, legume