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1.
Kissing. This noun comes from verb osculate 'to kiss', in turn based upon the diminuitive form of the Latin word for mouth, osculum.
Hey, I'm in the mood for some osculation!
by Bilby December 22, 2006
 
2.
The act of recieving blowjobs from Christian music festival attenders dressed as spiderman...
I was osculating like no other, yo, g-unit.
by Nik April 25, 2004