Batsar (H1219) has a cluster of related meanings. In agricultural contexts it means to harvest grapes. In military contexts it means to fortify or make a city inaccessible. The word batsar also gives rise to bitserah (fortress) and the place name Bozrah. The concept of 'cutting off' connects the grape harvest with siege and divine judgment.
The grape harvest imagery connects directly to judgment theology. Revelation 14:18–20 echoes Joel 3:13 — 'thrust in your sickle and gather the clusters' — drawing on batsar imagery for the final harvest of wrath. God is the divine vinedresser; nations are the grapes. Fortified cities (batsar) offer no protection against the God who brings them low.