1. a person who gives birth; a mother
Usage: informal; sometimes used in medical or biological contexts
2. a person who believes or promotes the false claim that a political figure (especially a U.S. president) was not born in their stated country of citizenship
Usage: informal; often used pejoratively

Examples

• The birther was exhausted after labor and delivery.
• Many birthers questioned the president's eligibility for office.
• The hospital staff supported the birther throughout the birthing process.
• Conspiracy theorists and birthers spread misinformation online.
• She became a birther at age twenty-five.