peanut
n. countablen. a small, oval nut that grows in a shell underground. You can eat them as a snack, in butter, or in many types of cooking.
n. the edible seed of a South American leguminous plant that ripens in pods under the ground.
I like to eat peanuts while watching a movie.
Many schools have strict rules against bringing peanuts into the classroom because some children have severe allergies.
While commonly categorized as a nut in culinary contexts, the peanut is botanically a legume, sharing more characteristics with beans and lentils than with walnuts or almonds.
From pea + nut, perhaps a folk etymology of pinda, pinder (still found in Southern US dialects).
Commonly used in the plural when referring to the snack; the singular often acts as a modifier in compound nouns like 'peanut butter'.