Merriam-Webster Online Dictionary
mangrove (noun)1.
any of a genus ( especially of the family Rhizophoraceae) of tropical maritime trees or shrubs that send out many prop roots and form dense masses important in coastal land building and as foundations of unique ecosystems - Rhizophora, R. mangle
2.
any of numerous trees (as of the genera of the vervain family or of the family Sonneratiaceae) with growth habits like those of the true - Avicennia Sonneratia mangroves
