'oil nut' definitions:

Definition of 'oil nut'

From: WordNet
noun
Oily drupaceous fruit of rabbitwood [syn: buffalo nut, elk nut, oil nut]

Definition of 'oil nut'

From: GCIDE
  • Butternut \But"ter*nut`\, n.
  • 1. (Bot.) An American tree (Juglans cinerea) of the Walnut family, and its edible fruit; -- so called from the oil contained in the latter. Sometimes called oil nut and white walnut. [1913 Webster]
  • 2. (Bot.) The nut of the Caryocar butyrosum and {Caryocar nuciferum}, of S. America; -- called also Souari nut. [1913 Webster]