moonling

noun4

1. •
   Someone from the Moon.

   • A shy moonling hangs on the suit of an astronaut and is taken back to earth. — 1981
2. •
   A changeling.
3. •
   (literary, no longer used) One who is lovesick; one who moons over a beloved.

   • The sky was not quite as blue as her—Thunderation, he was no moonling! — 2011
4. •
   (no longer used) A simpleton; a lunatic.

   • I have a husband, and a two-legg'd one, But such a moonling, as no wit of man, Or roses can redeem from being an ass. — 1616