What is an assonance in the highwayman?

Assonance in "The Highwayman" refers to the repetition of vowel sounds within Words in the poem. For example, in the line "The wind was a torrent of darkness among the gusty trees," the repetition of the short "i" sound in "wind," "was," "torrent," and "darkness" creates assonance. This literary device helps create a musical and rhythmic quality in the poem, enhancing its overall impact on the reader.