Definition of rostrum noun from the Oxford Advanced American Dictionary

 

rostrum

 noun
noun
NAmE//ˈrɑstrəm//
 
(pl. rostrums, (or )rostra
NAmE//ˈrɑstrə//
 
)
 
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a small raised platform that a person stands on to make a speech, conduct music, receive a prize, etc. He climbed on to the winner's rostrum.
See the Oxford Advanced Learner's Dictionary entry: rostrum