"Extension, the son of the giant whom Sibbechai slew (2 Sam." 21:18); called also Sippai (1 Chr. 20:4). "Beautiful, a town of Judah (Micah 1:11), identified with" "es-Suafir, 5 miles south-east of Ashdod."
Definition of Saph:
"rushes; sea-moss"