fiddle
noun
°(music) Any of various bowed string instruments, often used to refer to a violin when played in any of various traditional styles, as opposed to classical violin.
"When I play it like this, it's a fiddle; when I play it like that, it's a violin."
°An adjustment intended to cover up a basic flaw.
"That parameter setting is just a fiddle to make the lighting look right."
verb
°To play aimlessly.
°To adjust in order to cover a basic flaw or fraud etc.
synonyms: violin, fudge