Brazil nut        
noun uk/brəˈzɪl ˌnʌt/ us/brəˈzɪl ˌnʌt/
 [ C ]巴西坚果 
a large curved nut that grows in a hard, three-sided shell
  [ C or U ] (also Brazil nut tree)巴西坚果树(一种南美的树,其果实大而干,内有三面形的大坚果) 
a South American tree that produces a large, dry fruit filled with large three-sided nuts