Meaning of rock cress

rock' cress"

Pronunciation: [key]
  1. any of several low growing plants belonging to the genus Arabis, of the mustard family, having spikes or one-sided clusters of white, pink, or purple flowers, grown as an ornamental in rock gardens.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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