The word basophile refers to a type of white blood cell that is typically involved in the body's immune response. Some synonyms for basophile might include eosinophil, which is also a type of white blood cell that helps to fight off infections, as well as mast cell, which plays a role in allergic reactions. Other related terms might include histamine-producing cells, which are closely connected to mast cells, or even simply immune cells, which encompasses a broader range of white blood cell types. Regardless of the specific synonym used, all of these terms have in common a connection to the body's immune system and its ability to fight off disease and infection.