Ambiguity is a deliberate or accidental openness of meaning in a poem, where a word, image, phrase, or line can be understood in more than one way. Poets may use it to create tension, mystery, irony, or layered meaning, inviting readers to pause and consider different interpretations at once.
Ambiguity is not the same as confusion: the best examples give the reader enough clues to sense several possible meanings without settling on only one.
Example
The glass of dawn broke over the hill
and morning filled the room.
She held the letter to the light
and watched it bloom.