The pining one, the younger son of Elimelech and Naomi, and husband of Orpah, Ruth’s sister (Ruth 1:2; 4:9).
Chilion
Chilion is the quieter of two brothers in the book of Ruth, and his story is brief and sad. Ruth 1:2 says that he and Mahlon went with their parents Elimelech and Naomi to Moab, probably to escape a famine. There the sons married Moabite women, Orpah and Ruth, and then Ruth 1:5 says, “Mahlon and Chilion died also both of them.” Naomi was left without husband or sons. Yet in chapter 4 Boaz buys all that was Chilion’s and Mahlon’s, and that choice leads to a family line that includes David. Begin with Ruth 1.
4 verses
Ruth
Ruth 1:2
And the name of the man was Elimelech, and the name of his wife Naomi, and the name of his two sons Mahlon and Chilion, Ephrathites of Bethlehemjudah. And they came into the country of Moab, and continued there.
Ruth 1:4
And they took them wives of the women of Moab; the name of the one was Orpah, and the name of the other Ruth: and they dwelled there about ten years.
Ruth 1:5
And Mahlon and Chilion died also both of them; and the woman was left of her two sons and her husband.
Ruth 4:9
And Boaz said unto the elders, and unto all the people, Ye are witnesses this day, that I have bought all that was Elimelech's, and all that was Chilion's and Mahlon's, of the hand of Naomi.
From Easton's Bible Dictionary
Matthew George Easton, 1897