atter

Definitions

1. Poisonous bodily fluid, especially venom of a venomous animal, such as a snake, dragon or other reptile; corrupt or morbid matter from the body, such as pus from a sore or wound; bitter substance, such as bile.
   UK, archaic, dialectal
2. Moral corruption or corruptness; noxious or corrupt influence, poison to the soul, evil, anger, envy, hatred; destruction, death.
   archaic, figuratively
3. Epithelium produced on the tongue.
   UK, dialectal
4. A scab; a dry sore.
   UK, dialectal

Equivalents

CEFR level