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.
55 and 56). Fig. 54: Periodontal probing of a healthy gingiva. The periodontal probe tip is just below the gingival margin, within the gingival sulcus. The probe tip is putting pressure on the gingival tissues causing them to blanch (compare with the color of the adjacent gingiva).