Chestfeeding is the act of feeding a baby with milk from the chest. It is often used by transgender and non-binary parents who do not identify with the term breast. Chestfeeding can include both breastfeeding and pumping.

There are a few reasons why some people choose to use the term chestfeeding. Some people feel that the term breast does not include their gender identity. Others think the term breastfeeding can be triggering for people who have had negative experiences with their breasts. Still, others prefer the term because they feel it is more accurate.

The term chestfeeding was first used in the early 2000s by transgender and non-binary parents looking for a more inclusive term for feeding their babies. It has since gained popularity and is now used by many regardless of gender identity.