- sumac - wood of a sumac
--1 is a kind of wood
--1 is a substance of sumac, sumach, shumac- sumac, sumach, shumac - a shrub or tree of the genus Rhus (usually limited to the non-poisonous members of the genus)
--2 is a kind of shrub, bush
--2 is a member of Rhus, genus Rhus
--2 has substances: sumac
--2 has particulars: - sumac, sumach, shumac - a shrub or tree of the genus Rhus (usually limited to the non-poisonous members of the genus)