'Gall' in the Bible

lest there be among you a man or woman, or family or tribe, whose heart is turning to-day from Jehovah our God, to go to serve the gods of those nations, lest there be in you a root fruitful of gall and wormwood:

For of the vine of Sodom their vine is, And of the fields of Gomorrah; Their grapes are grapes of gall -- They have bitter clusters;