one who plays on a fiddle or violin.-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.-the common european sandpiper (tringoides hypoleucus); -- so called because it continually oscillates its body.