flower-of-an-hour

1 definition found

flower-of-an-hour - WordNet (r) 2.1 (2005) :

  flower-of-an-hour
      n 1: annual weedy herb with ephemeral yellow purple-eyed
           flowers; Old World tropics; naturalized as a weed in North
           America [syn: flower-of-an-hour, flowers-of-an-hour,
           bladder ketmia, black-eyed Susan, Hibiscus trionum]