1. Of a colour similar to that of wood or earth
   - brown, brownish, chocolate-brown

See also: chromatic

• brain trust
• brain truster
• brain tumor
• brain tumour
• brain-fag
• brain-teaser
• brainbox
• braincase
• class Asteroidea
• class Aves
• class Bacillariophyceae
• class Basidiomycetes
• class Bivalvia
• class Bryopsida
• class Cephalopoda
• class Cestoda
• class Channidae
• class Charophyceae
• class Chilopoda
• class Chlorophyceae
• class Chondrichthyes
• class Chrysophyceae
• class Chytridiomycetes
• class Ciliata
• class Ciliophora