Definition of atter:
(n) :
(archaic or UK dialectal) 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.
(n) :
(archaic, figuratively) Moral corruption or corruptness; noxious or corrupt influence, poison to the soul, evil, anger, envy, hatred; destruction, death.
(n) :
(UK dialectal) A scab; a dry sore.
(n) :
(UK dialectal) Epithelium produced on the tongue.
(v) :
(UK dialectal) to discharge, as a sore; clot; curdle; cake
(v) :
(UK dialectal) to venom; sting