WordNet sense 1 (United States professional baseball player famous for hitting home runs (1895-1948)):

Babe Ruth, George Herman Ruth, Sultan of Swat

WordNet sense 2 (a feeling of sympathy and sorrow for the misfortunes of others):

commiseration, pathos, pity

WordNet sense 3 (a book of the Old Testament that tells the story of Ruth who was not an Israelite but who married an Israelite and who stayed with her mother-in-law Naomi after her husband died):

Book of Ruth