monologue

Short definition from Wiktionary

Noun

1. 1
   A long speech by one person in a play; sometimes a soliloquy; other times spoken to other characters.
2. 2
   A long series of comic stories and jokes as an entertainment.
3. 3
   A long, uninterrupted utterance that monopolizes a conversation.

Verb

1. 1
   To deliver a monologue.