kettle

(noun) a metal pot for stewing or boiling; usually has a lid. Synonyms: boiler.

(noun) the quantity a kettle will hold. Synonyms: kettleful.

(noun) (geology) a hollow (typically filled by a lake) that results from the melting of a mass of ice trapped in glacial deposits. Synonyms: kettle hole.

(noun) a large hemispherical brass or copper percussion instrument with a drumhead that can be tuned by adjusting the tension on it. Synonyms: kettledrum, tympanum, tympani, timpani.