1.〈美〉作告别演说者;(代表毕业生)致告别辞的学生
1.the student in a high school who has the best grades, and who usually makes a speech at a graduation ceremony
1.Matt: I'm so glad that all three of us are co-valedictorians together.
马特:真高兴我们三个能一起成为合作致告别词的毕业生代表。