WordNet (r) 3.0 (2006):

Arecaceae
    n 1: chiefly tropical trees and shrubs and vines usually having
         a tall columnar trunk bearing a crown of very large leaves;
         coextensive with the order Palmales [syn: Palmae, family
         Palmae, Palmaceae, family Palmaceae, Arecaceae,
         family Arecaceae, palm family]