1. Inability to see the colour red or to distinguish red and bluish-green
   - red-blind

See also: blind, protanopia, unsighted

• bull through
• bull tongue
• bull's eye
• bulla
• bullace
• bullace grape
• bullate
• bullbat
• bullbrier
• bulldog
• bulldog ant
• bulldog clip
• bulldog wrench
• bulldoze
• class
• class Acrasiomycetes
• class act
• class Actinozoa
• class action
• class Amphibia
• class Angiospermae
• class Anthoceropsida
• class Anthozoa
• class Aphasmidia
• class Arachnida