Longman Dictionary of Contemporary English - kettle

~ n 1 a metal or plastic container with a lid, a handle, and a spout (=for pouring), used to boil water 2 put the kettle on to boil water in a kettle  (I'll put the kettle on for tea.) 3 another/a different kettle of fish informal used to say that a situation that is very different from one that you have just mentioned  (She enjoys public speaking but being on TV is a different kettle of fish.) 4 a fine/pretty kettle of fish a situation that will cause you problems