From an unused root (meaning to heap up); a stack of sheaves; by analogy, a tomb -- shock (stack) (of corn), tomb.
H1430. gadiysh
I. גָּדִישׁ noun masculineJob 5:26 heap, stack (Late Hebrew id., Aramaic id.) — גָּדִישׁ Exodus 22:5 3t.; — stack of sheaves 22:5; Judges 15:5 ("" קָמָה in both) Job 5:26.
II. גּדשׁ (= *; exact meaning unknown).
II. גָּדִישׁ noun [masculine] tomb (Arabic id.) Job 21:32; Dr§ 178, ed. 3, p. 229 suggests reading גֶּדֶשׁ.