'Swell' in the Bible

and these waters that bring a curse will go into your intestines to cause [your] womb to swell and to make [your] hip fall away." And the women will say, "Amen. Amen."

Your clothing did not wear out {on you}, and your feet did not swell [during] these forty years.

Forty years you sustained them in the desert--they were not in need. Their clothing did not wear out and their feet did not swell.