KETTLE

[noun] [C] - a covered metal or plastic container with a handle and a spout, used for boiling waterPeople often say "I'll put the kettle on" when they are going to make tea or coffee.(informal) He knows all about computers but being able to explain them to others is a different kettle of fish (= something very different).(informal dated) You've lost your car keys? Well, this is a pretty/fine kettle of fish (= a very difficult and annoying situation)!