Definition.com
A Poem is a private story, after all, no matter how apparently public. The reader is always overhearing a confession.
Meme.com

Definition.com
A Poem is a device that records emotions and moods that lie beyond normal language, that can only be patched together and hinted at metaphorically.
Definition.com
A Poem is a letter in a bottle thrown out to the sea that it may somehow wash up somewhere, perhaps on the shoreline of the heart.
Definition.com
A Poem is almost like someone whispering to another person, or you hear the whispering in your head.