FIL'BERT, noun [Latin avellana, with which the first syllable corresponds; fil, vel.] The fruit of the Corylus or hazel; an egg shaped nut, containing a kernel, that has a mild, farinaceous, oily taste, which is agreeable to the palate. The oil is said to be little inferior to the oil of almonds.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI