The noun gadish refers to a heap or stack of harvested grain sheaves — what the KJV calls a 'shock of corn.' It appears in contexts of harvest abundance and also in warnings about fire consuming the crops.
The image of the grain heap (gadish) captured the blessing of harvest abundance and the vulnerability of agricultural life. When Samson ties firebrands to the foxes' tails and burns the Philistine grain heaps (Judges 15:5), he strikes at the heart of their food supply. Job uses the image of a mighty man dying 'as the full grain heap' (Job 5:26) — ripened at the proper time — to describe the blessed death of the righteous. The harvest imagery throughout Scripture (Joel 3:13; Revelation 14:15) draws on the gut-level realities of grain heaps, whether for joy or judgment.