Meaning of ruderal

ru•der•al

Pronunciation: (r'dur-ul), [key]
— Bot. Bot.
—adj.
  1. (of a plant) growing in waste places, along roadsides or in rubbish.
—n.
  1. a ruderal plant.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.