Verses with the word threshingfloors in the Old Testament (2 verses):

1 Samuel 23:1
Then they told David, saying, Behold, the Philistines fight against Keilah, and they rob the threshingfloors.

Daniel 2:35
Then was the iron, the clay, the brass, the silver, and the gold, broken to pieces together, and became like the chaff of the summer threshingfloors; and the wind carried them away, that no place was found for them: and the stone that smote the image became a great mountain, and filled the whole earth.