cereus

Definition of Cereus in English :

genus of much-branched treelike or shrubby cacti with pronounced ribs and rounded needlelike spines and nocturnal flowers usually white

WordNet Lexical Database for English. Princeton University. 2010.

Cereus

noun

1.

any tropical American cactus of the genus Cereus, esp C. jamacaru of N Brazil, which grows to a height of 13 metres (40 feet)

2.

any of several similar and related cacti, such as the night-blooming cereus

noun

any of a genus (Cereus) of cactus, including a number of night-blooming varieties of other genera, native to the SW U.S. and Mexico

n.

Any of various cacti that belong to or formerly belonged to the genus Cereus, such as a night-blooming cereus.