There is here a fine paronomasia upon the word chamor, "an ass," which also signifies "a heap;" bilchee hachamor, chamor chamorathayim, "With the jaw-bone of an ass, a heap upon two heaps."
heaps upon heaps:
Heb. an heap, two heaps, "And Samsonª said,ª° With the jawboneª of an ass,ªheaps² upon heaps,ª with the jawª of an assª have I slainª° a thousandª men.ª" {Jdg 15:16}