WordNet (r) 3.0 (2006):

hemp family
    n 1: two genera of erect or twining herbs that are pollinated by
         the wind, including the genera Cannabis and Humulus; term
         not used in all classifications; in some the genus Cannabis
         is placed in the family Moraceae and the genus Humulus in
         the family Urticaceae [syn: Cannabidaceae, family
         Cannabidaceae, hemp family]