A rhododendron is a large bush with large flowers which are usually pink, red, or purple.
rhododendron in British English
(ˌrəʊdəˈdɛndrən)
noun
any ericaceous shrub of the genus Rhododendron, native to S Asia but widely cultivated in N temperate regions. They are mostly evergreen and have clusters of showy red, purple, pink, or white flowers
Also called (US): rosebay. See also azalea
Word origin
C17: from Latin: oleander, from Greek, from rhodon rose + dendron tree
rhododendron in American English
(ˌroʊdəˈdɛndrən)
noun
any of a genus (Rhododendron) of trees and shrubs of the heath family, mainly evergreen, with showy flowers of pink, white, or purple
Word origin
L < Gr rhododendron < rhodon, rose (see Rhoda) + dendron, tree