The figurative language technique used in the sentence is a metaphor, directly comparing the Moon to a person forgetting something.
Metaphor is the figurative language technique used in the sentence: 'The white Moon heard it, and she forgot the dawn, and lingered on in the sky.' This is because the comparison is made directly between the Moon and a person forgetting something, without using 'like' or 'as'.
Metaphors are powerful tools in writing, as they create equivalencies between unlike things to convey deeper meanings. In this case, the Moon is compared to a person who 'forgets the dawn,' evoking a sense of personification and emotion.
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