·noun A word of doubtful meaning, occuring frequently in the Psalms; by some, supposed to signify silence or a pause in the musical performance of the song.
SELAH[PETRA] ...
Dictionary of Greek and Roman Geography
the end; a pause ...
Hitchcock's Bible Names Dictionary
A word frequently found in the Book of Psalms, and also in Hab. 3:9, 13, about seventy-four times in...
Easton's Bible Dictionary
This word, which is found only in the poetical books of the Old Testament, occurs seventy-one times ...
William Smith's Bible Dictionary