Which sound device is used in the line She swirled and twirled oh she spun?

The sound device used in the line "She swirled and twirled oh she spun" is assonance.

Assonance is the repetition of vowel sounds within a phrase or sentence. In this line, the repeated vowel sound is the short "u" sound in "swirled," "twirled," and "spun."

This repetition of the "u" sound creates a sense of movement and whirling, mirroring the actions described in the line.