1911 Encyclopædia Britannica/Barb
BARB. (1) (From Lat. barba, a beard), a term used in various senses, of the folds of mucous membrane under the tongue of horses and cattle, and of a disease affecting that part, of the wattles round the mouth of the barbel, of the backward turned points of an arrow and of the piece of folded linen worn over the neck by nuns. (2) (From Fr. barbe, meaning "from Barbary"), a name applied to a breed of horses imported by the Moors into Spain from Barbary, and to a breed of pigeons.