plant organ - a functional and structural unit of a plant or fungus

corn, Indian corn, maize, Zea mays - tall annual cereal grass bearing kernels on large ears: widely cultivated in America in many varieties; the principal cereal in Mexico and Central and South America since pre-Columbian times

mealie - an ear of corn

fruit - the ripened reproductive body of a seed plant

top - the upper part of anything; "the mower cuts off the tops of the grass"; "the title should be written at the top of the first page"

tree - a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms