|a rodlike Gram-positive bacterium, Mycobacterium tuberculosis, that causes tuberculosis: family Mycobacteriaceae|
|a stew of meat, vegetables, potatoes, etc.|
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
tubercle bacillus n.
The rod-shaped, gram-negative, aerobic bacterium Mycobacterium tuberculosis that causes tuberculosis. Also called Koch's bacillus.