the edible nut of a hazel
, esp. of a cultivated
European tree (Corylus avellana
or C. maxima
Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by
Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'filbert'ME filberde, philliberd, prob. via NormFr (noix de) filbert, (nut of) Philibert, after St. Philibert, whose feast came in the nutting season