| Noun | 1. | 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 |
| 2. | plantain - a banana tree bearing hanging clusters of edible angular greenish starchy fruits; tropics and subtropicsSynonyms: Musa paradisiaca, plantain tree | |
| 3. | plantain - starchy banana-like fruit; eaten (always cooked) as a staple vegetable throughout the tropics |