in surgery, a rupture of a bone or a solution of continuity in a bone when it is crushed or broken by some external cause. See Surgery.

FRÉNUM, or Frenum, Bridle, in anatomy, a name given to divers ligaments, from their office in retaining and curbing the motions of the parts they are fitted to.

Frenum Lingue, or Bridle of the Tongue; a membranous ligament, which ties the tongue to the os hyoides, larynx, fauces, and lower parts of the mouth. In some subjects the frenum runs the whole length of the tongue to the very tip; in which cases, if it were not cut, it would take away all possibility of speech. See Tongue-Tied.

Frenum Penis, a slender ligament, whereby the prepuce is tied to the lower part of the glans of the penis. Nature varies in the make of this part; it being so short in some, that unless divided it would not admit of perfect erection. There is also a kind of little frenum, fastened to the lower part of the clitoris.