<unk> s - Named for William<unk>  (1710-1801) - are hard or bony swellings which can develop in the distal interphalangeal joints (the furthest joints before the tips of the fingers or toes.) They are a sign of osteoarthritis, and are caused by formation of calcific spurs of the articular (joint) cartilage.
Heberden's node
Bouchard's nodes
Virchow's node
Osler's node
Schmorl's nodes
Osler nodes
Sentinel lymph node
Hilum