1. A person who has a warm personality with others; usually as a fascinating individual: The host of the TV talk show is an exceptional charmer with his guests.
2. Someone with an assured and ingratiating manner: Geraldine is considered to be one of the most successful people in the sales department because she is such a charmer with her customers.

Kathy's little daughters were both charmers who made everyone love to visit with the family whenever possible.