winepress: the hewn installation for pressing grapes, and especially the lower vat that catches the juice
An ancient winepress was two connected basins cut into rock. Grapes were trodden underfoot in an upper trough, and the juice ran down a channel into a lower vat where it collected. This word names that setup, and most often the lower catch-vat in particular.
Because the vat was where the harvest ended up, the word slides easily from the container to what fills it. When the text speaks of "the fullness of the winepress" or getting help "out of the winepress," it means the new wine the press yields, not the stone pit itself. Overflowing vats became a stock picture of a good year, and empty ones a picture of ruin.
Once, in Joel 3:13, the image turns dark: the vats overflow not with blessing but with ripe wickedness ready to be crushed, the winepress standing for God's judgment.
The closely related word for the upper treading trough is גַּת; a rarer term that sits beside this one is פּוּרָה.