1. impudence; effrontery.
2. bile, especially that of an animal.
3. something bitter or severe.
4. bitterness of spirit; rancor. Idioms
5. gall and wormwood, bitterness of spirit; deep resentment.
"biles can be gall."
"samples can be gall."
"cells can be gall."
This list can help you learn new vocabulary more quickly and be able explore other words more easily.