A synecdoche is a figure of speech in which the one of the following (or its reverse) is expressed:
-A part stands for a whole
-An individual stands for a thing
-A material stands for a thing
The use of synecdoche is a common way to emphasize an important aspect of a fictional character; for example, a character might be consistently described by a single body part, such as the eyes, which come to represent the character.
C. Erik Troedsson