a talk, especially a formal one about a particular subject, given to a group of people:
a campaign speech
give/make/deliver a speech
Each child had to give a short speech to the rest of the class.
a major speech on relations with China
a conference including meals and after-dinner speeches
Collins gave the keynote speech (=most important speech).
the ability to speak:
Only humans are capable of speech.
spoken language rather than written language:
In speech we use a smaller vocabulary than in writing.
the particular way in which someone speaks:
Bob's speech was slurred, and he sounded drunk.
a set of lines that an actor must say in a play:
Hamlet's longest speech