Tubercle (noun)

1. A small rounded protuberance or bump, especially on a bone or organ.
2. A small nodule or growth, typically benign, on the skin or mucous membrane.
3. A small raised area on the surface of an organ or tissue, usually caused by inflammation or disease.

Origin:

The word "tubercle" comes from the latin word "tuberculum" meaning "small lump or bump".

Examples:

1. The patient has a tubercle on his lung.
2. The tubercle on the bone was caused by a bacterial infection.
3. The plant's tubercle was an indication of the disease it had.
4. The tubercle on the lung was revealed through the X-ray.
5. The tubercle on the skin was biopsied to check for cancer.