Search Result for "arborvitae": 
Wordnet 3.0

NOUN (1)

1. any of several Asian and North American conifers of the genera Thuja and Thujopsis; 



WordNet (r) 3.0 (2006):

arborvitae
    n 1: any of several Asian and North American conifers of the
         genera Thuja and Thujopsis