kettle, boiler -- (a metal pot for stewing or boiling; usually has a lid)
kettle, kettleful -- (the quantity a kettle will hold)
kettle hole, kettle -- ((geology) a hollow (typically filled by a lake) that results from the melting of a mass of ice trapped in glacial deposits)
kettle, kettledrum, tympanum, tympani, timpani -- (a large hemispherical brass or copper percussion instrument with a drumhead that can be tuned by adjusting the tension on it)