1) Hardwood hobbyist 2) Pecan cousin 
(from the article `hickory`) ...flowers, both of which lack petals, are borne in different clusters on the same tree, the male in hanging catkins and the female in terminal ...
[n] - small hard-shelled nut of North American hickory trees especially the shagbark hickories
noun small hard-shelled nut of North American hickory trees especially the shagbark hickories