n.
An edible red alga (Palmaria palmata) that grows on rocky shores on both sides of the northern Atlantic Ocean.
[Scottish Gaelic duileasg, from Old Irish duilesc.]
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.