Definition of Metaphor
Early in the novel, Nick uses metaphors to compare Long Island’s two northern peninsulas to eggs and Long Island Sound to a barnyard:
Twenty miles from the city a pair of enormous eggs, identical in contour and separated only by a courtesy bay, jut out into the most domesticated body of salt water in the Western hemisphere, the great wet barnyard of Long Island Sound.
Nick’s thoughts during his first dinner with the Buchanans contain an implied metaphor comparing Tom to an animal nibbling on stale food:
Unlock with LitCharts A+As for Tom, the fact that he “had some woman in New York” was really less surprising than that he had been depressed by a book. Something was making him nibble at the edge of stale ideas as if his sturdy physical egotism no longer nourished his peremptory heart.
The Great Gatsby’s famous last line is an example of both metaphor and alliteration:
Unlock with LitCharts A+So we beat on, boats against the current, borne back ceaselessly into the past.