from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of several perennial plants, of the genus Hemerocallis, that have fleshy roots, grasslike leaves and colourful flowers that bloom for just one day.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any of numerous perennials having tuberous roots and long narrow bladelike leaves and usually yellow lily-like flowers that bloom for only a day
day + lily (Wiktionary)