kettle hole

noun

1. a metal container for boiling or cooking things; pot
2. a teakettle
3. a kettledrum
4. Geol.
   also kettle hole
   1. a depression in glacial drift remaining after the melting of an isolated mass of buried ice
   2. a kettle-shaped hole in rock, gravel, etc.

Origin: ME ketel < ON ketill, akin to OE cetel, Ger kessel, Goth katils, early Gmc loanword < L catillus, dim. of catinus, container for food