Proper noun

1. A diminutive form of Catherine and of its variant forms, also used as a formal given name in the 20th century.

Quotations

• 1847 Emily Brontë: Wuthering Heights: Volume II, Chapter III:

  It was named Catherine, but he never called it the name in full, as he had never called the first Catherine short, probably because Heathcliff had a habit of doing so. The little one was always Cathy, it formed to him a distinction from the mother, and yet, a connection with her;