Easton's Bible Dictionary (1897)
Extension, the son of the giant whom Sibbechai slew (2 Sam. 21:18); called also Sippai (1 Chr. 20:4).
Smith's Bible Dictionary (1863)
(tall), one of the sons of the giant slain by Sibbechai the Hushathite. (2 Samuel 21:18) In (1 Chronicles 20:4) he is called Sippai. (B.C. about 1050.)
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
SAPH (tall), a Philistine giant, 2 Sam 21:18; called Sippai in 1 Chr 20:4.
Hitchcock's Bible Names (1869)
rushes; sea-moss