What part of speech is sensory detail?

"Sensory detail" itself isn't a part of speech. It's a literary term that refers to the use of words that appeal to the five senses: sight, sound, smell, taste, and touch.

The words used to create sensory details can be any part of speech, depending on how they're used in a sentence. For example:

* Nouns: "The sun blazed in the sky." (Sight)

* Adjectives: "The warm air carried the scent of freshly cut grass." (Touch, Smell)

* Verbs: "The crackling fire crackled and popped." (Sound)

* Adverbs: "The leaves rustled softly in the breeze." (Sound)

So, sensory detail itself isn't a part of speech. It's a technique that uses words of various parts of speech to create vivid descriptions that engage the reader's senses.