1. seder - Noun
2. Seder - Proper noun
(Judaism) the ceremonial dinner on the first night (or both nights) of Passover
Source: WordNetRemember, you must not sleep at the Seder. If you do, Elijah the Prophet will come with a bag on his shoulders. On the two first nights of Passover, Elijah the Prophet goes about looking for those who have fallen asleep at the Seder, and takes them away in his bag. Sholem Aleichem
Afikoman 14th century Haggadah The afikoman an integral part of the Seder itself is used to engage the interest and excitement of the children at the table. Source: Internet
Also, at different points in the Seder, the leader of the Seder will cover the matzot and lift their cup of wine; then put down the cup of wine and uncover the matzot all to elicit questions from the children. Source: Internet
Among Christian denominations, the Eastern Orthodox Church holds that this Eucharistic meal was not the Passover Seder, but a separate meal. Source: Internet
And for the rest of the Seder, I waver between sleep and waking. Source: Internet
Bromiley International Standard Bible Encyclopedia: E-J p. 55 The rabbinical Seder Olam explains that the letter was delivered seven years after his ascension. Source: Internet