'Threshing floors' in the Bible

And they will announce to David, saying, Behold, the rovers fighting against Keilah, and they are plundering the threshing-floors.

Thou shalt not rejoice, O Israel; exult not as the peoples: for thou didst commit fornication from thy God; thou didst love a gift upon all the threshing-floors of grain.

And the threshing-floors were filled with grain, and the wine-vats overflowed with new wine and new oil.