Pronunciation: (sim'ur),[key] —v.i. 1. to cook or cook in a liquid at or just below the boiling point.
2. to make a gentle murmuring sound, as liquids cooking just below the boiling point.
3. to be in a state of subdued or restrained activity, development, excitement, anger, etc.: The town simmered with rumors.
—v.t. 1. to keep (liquid) in a state approaching boiling.
2. to cook in a liquid that is kept at or just below the boiling point.
3. simmer down, a. to reduce in volume by simmering.
b. Slang.to become calm or quiet, as from a state of anger or turmoil: We waited for the audience to simmer down.