Alliteration

a figure of speech in which the same sound appears at the beginning of two or more words. Alliterative words are consecutive or close to each other in the text.

Example From Text

The wild wave of famished beasts rolled back before them, and Buck shook himself free.

Explanation

London repeats the "W" sound in the phrase "wild wave." This alliteration emphasizes the ferociousness of the pack of huskies.