Boil (6)
'boil' is the definition.
(I know that simmer is a more specific form of boil)
This is all the clue.
(Other definitions for simmer that I've seen before include "Bubble away" , "Cook in gently boiling water" , "Bubble on a low gas" , "Boil slowly at low temperature" , "Cook just below boiling point" .)
'boil' is the definition.
(I know that seethe is a more specific form of boil)
This is all the clue.
(Other definitions for seethe that I've seen before include "Bubble, almost boil" , "exhibit anger" , "Bubble gently just below boiling point" , "Boil or become very angry" , "(Of liquid) boil" .)