What is the meaning of Fiddler?

One who plays the fiddle.

One who fiddles; a cheat.

One who fiddles or tweaks.

A burrowing crab of the genus Gelasimus, of many species. The male has one claw very much enlarged, and often holds it in a position similar to that in which a musician holds a fiddle.

The common European sandpiper (Actitis hypoleucos); so called because it habitually wags its tail up and down resembling the back and forth movement of a fiddler.

A large species of cicada, Macrotristria angularis, of eastern Australia; cherry nose.

A coin of little value: a sixpence or a farthing.

The capstan-house on a steamer.

Source: wiktionary.org