Definition: "Amphitricha" refers to a type of stone, especially in the form known as "amphitheater," which was used for playing musical instruments such as the lyre. The term can also refer to a large group of people gathered together or a large body of water. The word is found in the Bible's Old Testament, where it describes a type of stone used by ancient Israelites. The term "amphitheater" could be related to a place where musical performances were performed, as well as being associated with a group of people.