Queensland nut : The nut of an Australian tree (Macadamia ternifolia). It is about an inch in diameter, and contains a single round edible seed, or sometimes two hemispherical seeds. So called from Queensland in Australia.

Example:


Taxonomy
nut, Macadamia, macadamia nuts, Australia, tree, species, Beaumont, M. tetraphylla, genus, shell, Macadamia integrifolia, free encyclopedia, M. integrifolia, eastern Australia, hybrid, crop, unranked, nut processing.

Defination from the web:
nut trees were originally found at Mount Bauple near Maryborough in southeast Queensland, Australia. Locals in this area still refer to them as "Bauple nuts" ... Nuts Pty Ltd, opened Australia's first purpose-built processing plant at Slacks Creek, near Brisbane, Queensland. ...