(batsek, meaning "swelling, " i.e., in fermentation). The dough the Israelites had prepared for baking was carried away by them out of Egypt in their kneading-troughs (Exodus 12:34, 39). In the process of baking, the dough had to be turned (Hosea 7:8).

Noah Webster's New International Dictionary of the English Language

1. (n.) Paste of bread; a soft mass of moistened flour or meal, kneaded or unkneaded, but not yet baked; as, to knead dough.

2. (n.) Anything of the consistency of such paste.