A straight line or direct route from one place to another, often taken quickly.
American English, 1800s, based on the observation that honeybees fly directly from flower to hive using a straight path, even though humans can't see or follow it perfectly.
Bees navigate using the sun and polarized light patterns invisible to humans—they've had GPS technology built into their biology for 100 million years, and we're just now understanding how.
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