Definition of knack. 1  1 : a special ready capacity that is hard to analyze or teach. 2  2a : a clever trick or stratagemb : a clever way of doing something. 3  3 archaic : an ingenious device; broadly : toy, knickknack.
Medical Definition of gingivoplasty. plural. gingivoplasties. : a surgical procedure that involves reshaping the gums for aesthetic or functional purposes.
3. Gingivoplasty â This type of gum surgery is used to reshape healthy gum tissue around the teeth to make them look better. If a person has tooth recession where the gum is pushed away from the tooth, a gingivoplasty can be done. A gum graft can be done where the tissue is taken from the roof of the mouth (this is called a graft) and then stitched into place on either side of the tooth that is recessed.