1. a small to medium-sized tree growing in brackish water especially along the shores of the southwestern Pacific • Syn: Avicennia officinalis • Hypernyms: tree • Member Holonyms: Avicennia, genus Avicennia 2. shrub to moderately large tree that grows in brackish water along the seacoasts of western Africa and tropical America; locally important as a source of tannin • Syn: Laguncularia racemosa • Hypernyms: tree • Member Holonyms: Laguncularia, genus Laguncularia