Meaning

• To object to something vociferously; to rail against in speech.

• To recite, e.g., poetry, in a theatrical way; to speak for rhetorical display; to speak pompously, noisily, or theatrically; bemouth; to make an empty speech; to rehearse trite arguments in debate; to rant.

• To speak rhetorically; to make a formal speech or oration; specifically, to recite a speech, poem, etc., in public as a rhetorical exercise; to practice public speaking.

  "The students declaim twice a week."