F Holes Share definition Flag All violins, violas, cellos and double basses have 2 holes either side of their bridge. These are, in fact, the instruments 'pair' of vaginas. Dude, what are f holes?F holes are it's pair of vaginas. That's how string instrumets mate. Endpin > either of the vaginas. F Holes by dstark March 15, 2010 Get the F Holes mug.