Definitions of kettle:

noun: a metal pot for stewing or boiling; usually has a lid
noun: a large hemispherical brass or copper percussion instrument with a drumhead that can be tuned by adjusting the tension on it
noun: the quantity a kettle will hold
noun: (geology) a hollow (typically filled by a lake) that results from the melting of a mass of ice trapped in glacial deposits
name: A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #18158)