daylily means any of several perennial plants, of the genus Hemerocallis, that have fleshy roots, grasslike leaves and colourful flowers that bloom for just one day. Lexicurio rates it Sui generis — a strength score of 92 out of 100.
Etymology
From day + lily.
noun
- Any of several perennial plants, of the genus Hemerocallis, that have fleshy roots, grasslike leaves and colourful flowers that bloom for just one day.