filbert
Concise Oxford English Dictionary © 2008 Oxford University Press:
filbert/ˈfɪlbət/
▶noun
- 1 a cultivated oval hazelnut.
- 2 the tree that bears filberts. [Corylus maxima and other species.]
- 3 (also filbert brush) a brush with bristles forming a flattened oval head, used in oil painting.
– origin ME fylberd, from Anglo-Norman Fr. philbert, dial. Fr. noix de filbert (so named because it is ripe about 20 August, the feast day of St Philibert).
'filbert' also found in these Oxford entries:

