plantain -- (any of numerous plants of the genus Plantago; mostly small roadside or dooryard weeds with elliptic leaves and small spikes of very small flowers; seeds of some used medicinally)
plantain, plantain tree, Musa paradisiaca -- (a banana tree bearing hanging clusters of edible angular greenish starchy fruits; tropics and subtropics)
plantain -- (starchy banana-like fruit; eaten (always cooked) as a staple vegetable throughout the tropics)