Somniloquy

n.; pl. Soliloquies [ L. soliloquium; solus alone + loqui to speak. See Sole ly, and Loquacious. ] 1. The act of talking to one's self; a discourse made by one in solitude to one's self; monologue. [ 1913 Webster ]

Lovers are always allowed the comfort of soliloquy. Spectator. [ 1913 Webster ]

2. A written composition, reciting what it is supposed a person says to himself. [ 1913 Webster ]

The whole poem is a soliloquy. Prior. [ 1913 Webster ]