The term STIRRUP SITE refers to an archaeological site in which the remains of a saddle stirrup have been found. This type of artifact is believed to have been used by ancient civilizations, and its presence at an archaeological site can provide valuable information about the culture that inhabited the area. The crossword solution for this term is EAR, which is an abbreviation for equestrian archaeology research. This type of research focuses on the study of artifacts related to horseback riding, such as stirrups, bridles, and saddles.