Osculatorium
osculatorium
A plaque of metal, ivory, or wood, generally decorated with some pious carving and provided with a handle. It was used in the Middle Ages to convey the kiss of peace to the faithful, and was first brought to the altar for the celebrant to kiss at the proper place in tke Mass, then brought to each of the congregation in turn at the altar rails. In the medieval Nuptial Mass the kiss of peace was conveyed to the bridegroom by this means and transmitted by him to the bride.
Fuente: New Catholic Dictionary
Osculatorium
(object to be kissed), viz. pacis ad Missam (of peace for the Mass); the pax for the holy kiss, as used in the ancient Church. It was a piece of wood or metal, with a picture of our Savior, the blessed Virgin, or the like, painted or embossed upon it. This was kissed by the priest during the celebration of mass, and afterwards handed to the people for the same purpose; a custom which probably originated in the ancient kiss of charity, which was practiced by the Christians at the service of the Eucharist. SEE PAX.