This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. The act of kissing.

n. A kiss.

n. Mathematics A contact, as between two curves or surfaces, at three or more common points.

n. The action of kissing

n. A kiss

n. A close contact

n. A contact between curves or surfaces, at which point they have a common tangent

n. Determining whether a number is divisible by another by means of certain operations on its digits.

n. The act of kissing; a kiss.

n. The contact of one curve with another, when the number of consecutive points of the latter through which the former passes suffices for the complete determination of the former curve.

n. A kiss.

n. In geometry, the contact between a curve and another which osculates it. See osculate.

n. A point of undulation where a right line has four or more coincident points in common with a curve.

n. the act of caressing with the lips (or an instance thereof)

n. (mathematics) a contact of two curves (or two surfaces) at which they have a common tangent

"Tish says our vulgar lip-osculation is unknown in the Orient and that they rub noses by way of greeting."

contact   

point of osculation   

osculum    osculatory    oscular    osculate   

kiss   

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