Strong H1155 בֹּ֫סֶר bôser · unripe grape

Jeremiah

1. Jeremiah 31:29
   In those days they shall say no more, The fathers have eaten a sour grape, and the children’s teeth are set on edge.
2. Jeremiah 31:30
   But every one shall die for his own iniquity: every man that eateth the sour grape, his teeth shall be set on edge.