| either of two plants, Erythronium grandiflorum or E. montanum, of the lily family, of the mountains of northwestern North America, having nodding yellow or white flowers. |
| avalanche lily n. A western North American corm-producing plant (Erythronium grandiflorum) in the lily family, having white or golden-yellow flowers with red anthers. [So called because it grows near the snow line and blooms when the snow begins to melt.] |