Wordnet 3.0
NOUN (1)
1.
any of various deciduous or evergreen shrubs of the genus Hydrangea;
The Collaborative International Dictionary of English v.0.48:
Hydrangea \Hy*dran"ge*a\, peop. n. [NL., fr. Gr. "y`dwr water +
? vessel, capsule: cf. F. hydrang['e]e.] (Bot.)
A genus of shrubby plants bearing opposite leaves and large
heads of showy flowers, white, or of various colors.
Hydrangea hortensis, the common garden species, is a native
of China or Japan.
[1913 Webster]
WordNet (r) 3.0 (2006):
hydrangea
n 1: any of various deciduous or evergreen shrubs of the genus
Hydrangea