Job's tears

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun plural A tropical Asian grass (Coix lacryma-jobi) having white beadlike grains.
• noun plural The grains of this plant, eaten or used as ornamental beads.

from The Century Dictionary.

• noun A species of grass, Coix Lacryma, or the beads made of its fruit.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun coix

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun hard pearly seeds of an Asiatic grass; often used as beads