b home Peter D. Evan bamboo bam⋅boo [bam-boo] –noun 1. any of the woody or treelike tropical and semitropical grasses of the genera Bambusa, Phyllostachys, Dendrocalamus, and allied genera, having woody, usually hollow stems with stalked blades and flowering only after years of growth. 2. the stem of such a plant, used as a building material and for making furniture, poles, etc. a b c d e f g h i j k l m n o p q r s t u v w x y z back basket balloon bat bamboo banana band basketball bathroom baton be-bin bath bag