n.
Function: transitive verb
Date: 15th century
1 : to agitate (milk or cream) in a churn in order to make butter
2 a : to stir or agitate violently <an old stern-wheeler churn ing the muddy river> b : to make (as foam) by so doing
3 : to make (the account of a client) excessively active by frequent purchases and sales primarily in order to generate commissions
intransitive verb
1 : to work a churn
2 a : to produce, proceed with, or experience violent motion or agitation <her stomach was churn ing > < churn ing legs> b : to proceed by or as if by means of rotating members (as wheels or propellers) <boats churn ing across the harbor>