2 occurrences in 2 dictionaries

Reference: Baal-tamar

Easton

lord of palm trees, a place in the tribe of Benjamin near Gibeah of Saul (Jg 20:33). It was one of the sanctuaries or groves of Baal. Probably the palm tree of Deborah (Jg 4:5) is alluded to in the name.

Hastings

An unknown site near Bethel and Gibeah (Jg 4:5).