A feed bunk is a structure used to hold food for livestock, typically found on farms or in agricultural settings. Synonyms for feed bunk include feeding trough, feeding bin, hay rack, and manger. A feeding trough is usually long and narrow, while a feeding bin can be a smaller container for holding feed. A hay rack is a tall structure used for holding hay for animals to eat. A manger is a low feeding trough usually made of wood or metal and used for feeding horses or cattle. Regardless of the term used, these structures serve an important purpose in ensuring that livestock have access to proper nutrition.