sound
A fiddle is a stringed instrument. The sound is produced by plucking strings. The pitch is determined with the fret board.
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physically nothing... They are identical as instruments. However, the playing style is very different, as the classical violinist tends towards a refined, polished sound and the fiddle player a more rustic and direct sound.
The fiddle or viol had a much more guitar-shaped body and a different shape of soundhole. They also lacked a soundpost, which dramatically altered the sound.
Sound is produced from a fiddle by plucking its strings. Therefore it belongs to the string family. In general practice, this instrument is not used in modern concert orchestra.
During the 16th. century, the advent of the word 'violin' for the instrument colloquially known as 'fiddle' drove the word 'fiddle' into common usage. First recorded use of the alliterative nonce word, as nonsense itself, 'fiddle faddle' was in 1577
It means to come in behind someone else, as if they were the first fiddle in the orchestra and you were the second one. The second fiddle in an orchestra supports the first one and plays harmony for them - someone who is playing second fiddle supports the other person and backs them up.
Somewhat; they are not true rhyming words, but when read fluidly, they will sound very similar.
In Christopher Fry's The Lady's Not For Burning, Justice Tappercoom says "The whole thing's a lot of amphigourious, stultiloquential fiddle-faddle."
Fiddle.
As fit as a fiddle.