Definition: the ball-shaped capsule containing the vertebrate eye
Similar words: capsule
Definition: a structure that encloses a body part
Definition: an object with a spherical shape
Usage: a ball of fire
Similar words: sphere
Definition: a solid figure bounded by a spherical surface (including the space it encloses)
Definition: move in an orbit
Usage: The moon orbits around the Earth; The planets are orbiting the sun; electrons orbit the nucleus