n. Chiefly British
Alfalfa.
[French luzerne, from Provençal luzerno, glowworm (perhaps from its shiny seeds), from Latin lucerna, lamp, from lūcēre, to shine. See lucid.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.