filbert Meaning, Definition & Usage

  1. noun small nut-bearing tree much grown in Europe
    Corylus avellana grandis; Corylus avellana; cobnut.
  2. noun nut of any of several trees of the genus Corylus
    cobnut; cob; hazelnut.

WordNet

Fil"bert noun
Etymology
Perh. fr. fill + bread, as filling the bread or husk; cf. G. bartnuss (lit., bread nut) filbert; or perh. named from a St.Philibert, whose day, Aug. 22, fell in the nutting season.
Definitions
  1. (Bot.) The fruit of the Corylus Avellana or hazel. It is an oval nut, containing a kernel that has a mild, farinaceous, oily taste, agreeable to the palate. ✍ In England filberts are usually large hazelnuts, especially the nuts from selected and cultivated trees. The American hazelnuts are of two other species.

Webster 1913