noun one who plays on a fiddle or violin.
2. fiddler ·noun the common european sandpiper (tringoides hypoleucus);
so called because it continually oscillates its body.
3. fiddler ·noun 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, hence the name;
called also calling crab, soldier crab, and fighting crab.