The Collaborative International Dictionary of English v.0.48:

Labioplasty \La"bi*o*plas`ty\ (l[=a]"b[i^]*[-o]*pl[a^]s`t[y^]),
   n. [Labium + -plasty.] (Surg.)
   A plastic operation for making a new lip, or for replacing a
   lost tissue of a lip.
   [Webster 1913 Suppl.]