means Relating to the curved path one body takes around another in space, or to the eye socket, or describing something that circles a central point.

from From Latin orbita, 'a track, course, or rut left by a wheel,' itself from orbis, 'a ring, circle, or disk.' The same orbis gave us 'orb.' The wheel-rut sense is telling: a planet's orbit is literally the groove its motion carves through space. The anatomical 'orbit' — the bony socket cradling the eye — borrowed the word for its rounded, hollow ring of bone.