filbert

American  

[fil-bert] / ˈfɪl bərt /

noun

1. the thick-shelled, edible nut of certain cultivated varieties of hazel, especially of Corylus avellana, of Europe.

2. a tree or shrub bearing such nuts.

---

filbert British  

/ ˈfɪlbət /

noun

1. any of several N temperate shrubs of the genus Corylus , esp C. maxima , that have edible rounded brown nuts: family Corylaceae

2. Also called: hazelnut.   cobnut.  the nut of any of these shrubs

---

Etymology

Origin of filbert

1250–1300; Middle English, short for filbert nut, so called because ripe by Aug. 22 (St. Philbert's day)