soliloquy

n. (pl. -quies) 1 talking without or regardless of hearers, esp. In a play. 2 this part of a play.  soliloquist n. Soliloquize v. (also -ise) (-zing or -sing). [latin solus alone, loquor speak]

n. The act of talking to one's self; a discourse made by one in solitude to one's self; monologue.