It’s “wine-dark,” in Homer’s “Odyssey”

SEA

Think of the body of water that ancient Greek sailors often crossed, described with poetic color in epic literature. This term also appears in phrases like "seven ___" in mythology.

Homer famously describes the sea as "wine-dark" in The Odyssey, a phrase that’s become iconic in ancient Greek literature. The clue is a direct reference to this poetic description, pointing to the body of water that surrounds the epic’s Mediterranean setting. Since "sea" fits both the literal meaning and the literary allusion, it’s the straightforward answer.