Definition of: churn

(chûrn) noun
1. A vessel in which milk or cream is agitated to separate the oily globules and gather them as butter.
2. Any vessel or receptacle similar in shape to a milk churn.
—v.t.
1. To stir or agitate (cream or milk), as in a churn, to make butter.
2. To make by agitation, as butter.
3. To agitate violently: The oars churned the water.
—v.i.
4. To stir or agitate cream or milk in making butter.
5. To produce or be in violent agitation; seethe. [OE cyrin]
—churn′er noun