Read the poem. Then, review line 4 in the first stanza.
Diamond Necklace
In the market's parking lot
Something shines right by my spot:
I spy a diamond on a chain.
I fly off with it like a jet plane.
I explain to the store clerk, who gives a grin.
"The diamond's owner just came back in!
She left it here, and I know that she
Will thank you for your honesty."
She gushes to me just what it meant—
"The necklace was a dear present."
She presses something in my hand
A bill stares at me, crisp and grand!
In line 4, what type of figurative language is used?