bract

n leaf-like and often brightly coloured part of a plant, growing below the flower (eg in bougainvillaea and poinsettia) 苞.

boxing-match, boy, Boy Scout, boy-friend, boycott, boyfriend, boyhood, boyish, BP, BPC, BR, bra, brace, brace and bit hand, bracelet, bracing, bracken, bracket, brackets, brackish, brad, bradawl, brae, brag, braggadocio, braggart, brahmin, braid, braided, braiding, Braille, brain, brain fever, brain-child, brain-drain, brain-teaser, brainless, brainpower, brains trust (US brain trust), brainstorm,