the three-sided, hard-shelled edible seed of the tree Bertholletia excelsa and related species, of South America.
Origin
1820-30
British Dictionary definitions for Brazil nut
brazil nut
noun
1.
a tropical South American tree, Bertholletia excelsa, producing large globular capsules, each containing several closely packed triangular nuts: family Lecythidaceae
2.
the nut of this tree, having an edible oily kernel and a woody shell