Définitions
1.NounA ritual, with religious or cultural significance.
2.NounAn official gathering to celebrate, commemorate, or otherwise mark some event."a graduation ceremony, an opening ceremony"
3.NounA formal socially established behaviour, often in relation to people of different ranks; formality.
4.NounShow of magnificence, display, ostentation.
5.NounAn accessory or object associated with a ritual.
6.NounAn omen or portent.