Easton's Bible Dictionary (1897)
Faltering; bashful, Rachel’s handmaid, whom she gave to Jacob (Gen. 29:29). She was the mother of Dan and Naphtali (Gen. 30:3-8). Reuben was cursed by his father for committing adultry with her (35:22; 49:4). He was deprived of the birth-right, which was given to the sons of Joseph.
Smith's Bible Dictionary (1863)
(timid, bashful), handmaid of Rachel, (Genesis 29:29) and concubine of Jacob, to whom she bore Dan and Naphtali.
Hastings' Dictionary of the Bible (1898)
BIL'HAH (timid, modest), the handmaid of Rachel, and, by Jacob, the mother of Dan and Naphtali. Gen 29:29; Gen 35:25.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
BIL'HAH . See Balah.
Hitchcock's Bible Names (1869)
Bilhan, who is old or confused