() "Tittle" is keraia, which means "the horn of an animal", "the antenna of crustaceans", "a bow", "an instrument for blowing", "a drinking horn", "horn points [for writing instruments]", "objects shaped like horns", "the wing [of an army]", "branch of a river", "corps of men", "sailyard", "mountain peak," and "anything made of horn." The small apostrophe like mark to distinguish numbers from letters in Greek is horn-shaped and therefore called a keraia.