Spell check/Google has failed me; how do you spell "dottle"?

When I look up "dottle" it says it's a burnt tobacco plug. But (correct me if I'm wrong), it can also mean to idle/to loaf (e.g. "Stop dottling around!").

What is the correct spelling? Spell checkers and Google keep giving me "bottle" , "doodle", and other words that don't match the phonetics.