[suhn-drops] 
| any of various plants of the genus Oenothera, of the evening primrose family, having flowers that bloom during the day. |
| evening primrose n. Any of various North American plants of the genus Oenothera, characteristically having four-petaled yellow flowers that open in the evening. Also called sundrops. |
| sun·drops (sŭn'drŏps') pl.n. (used with a sing. or pl. verb) See evening primrose. |
