the.com/keyhole
a tiny window built for trust, daring you not to peek through it
surgeryKeyhole surgery enters the body through holes under a centimeter
shape originThe classic shape mirrors old warded lock mechanisms
forbidden loreBluebeard's wives died for peeking through one
astronomyAsteroid orbits pass through gravitational keyholes near Earth
vision trickKeyhole limpets breathe through a hole atop their shell