Brazil nut \Bra*zil" nut`\ (Bot.) An oily, three-sided nut, the seed of the {Bertholletia excelsa}; the cream nut. Note: From eighteen to twenty-four of the seed or ``nuts'' grow in a hard and nearly globular shell.
Bertholletia excelsa n : tall South American tree bearing brazil nuts [syn: {brazil nut}, {brazil-nut tree}]