plural of swan neck deformity

A deformed position of the finger, in which the joint closest to the fingertip is permanently bent toward the palm while the nearest joint to the palm is bent away from it.

The logical error of discounting the possibility of something in which the arguer ignores contradictory evidence on the basis of past experience.

plural of black swan fallacy

Cygnus atratus sumnerensis, an extinct swan from the Chatham Islands and the South Island of New Zealand.

plural of New Zealand swan

A village and civil parish in North West Leicestershire district, Leicestershire, England (OS grid ref SK4116).