Smith's Bible Dictionary
Jehovahshalom(Jehovah (is) peace), or, with an ellipsis, "Jehovah the God of peace." The altar erected by Gideon in Orphrah was so called in memory of the salutation addressed to him by the angel of Jehovah, "Peace be unto thee." (Judges 6:24)
International Standard Bible Encyclopedia
JEHOVAH-SHALOMje-ho'-va sha'-lom (yahweb shalom, "Yahweh is peace"): This was the name given by Gideon to the altar he built at Ophra, in allusion to the word spoken to him by the Lord, "Peace be unto thee" (Judges 6:24). It is equivalent to "Yahweh is well disposed."
Easton's Bible Dictionary
Jehovah send peace, the name which Gideon gave to the altar he erected on the spot at Ophrah where the angel appeared to him (
Judges 6:24).