The poetic device in the line from Sandburg's poem 'Chicago' is a metaphor.
Metaphor is the poetic device incorporated in the line from Sandburg's poem "Chicago." A metaphor is a comparison of two unlike things without using 'like' or 'as.' In the line 'Fierce as a dog with tongue lapping for action, cunning,' the speaker compares something fierce to a dog without directly stating 'like' or 'as.'
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