1. Vet. Pathol.a disease of swine caused by bacterial infection of the tissues of the snout causing gross malformation and frequently serious blocking of the nasal passages.
Pronunciation: (bool'nōz"),[key] —n. 1. Also,bull's nose.Archit. a. a rounded or obtuse exterior angle, as the corner made by two walls.
b. a structural member, as a brick, used in forming such an angle.
2. Also called bull'nose step". a step having semicircular or quadrantal ends.