Metaphor
A figure of speech that makes a direct comparison between two unlike things. A metaphor suggests that one thing IS another thing, or is equal to another thing.
Example From Text
They were mere skeletons, draped loosely in draggled hides, with blazing eyes and slavered fangs.
Explanation
The author compares the dogs with skeletons to help the reader picture how thin and emaciated they are. Have you ever seen an animal so thin its ribs show through?