Easton's Bible Dictionary (1897)
Fruitful places, some unknown place in the south, where David found friends when he fled from Saul (1 Sam. 30:28).
Smith's Bible Dictionary (1863)
(fruitful), one of the places in the south of Judah which David frequented during his freebooting life.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
SIPH'MOTH (fruitful places), a place in the South of Judah frequented by David when an outlaw. 1 Sam 30:28.