Int. Standard Bible Encyclopedia BEN-ONI ben-o'-ni (ben-'oni; huios odunes mou, "son of my sorrow"): The name given by the dying Rachel to her new-born son; changed by his father Jacob to BENJAMIN (Genesis 35:18) which see.

Multi-Version Concordance Benoni (1 Occurrence) Genesis 35:18 It happened, as her soul was departing (for she died), that she named him Benoni, but his father named him Benjamin. (WEB KJV DBY)