1. a dreamlike, romantic, or uncritical sense of well-being.
2. a naively romantic and optimistic quality.
3. a cluster of stars too distant to be seen individually, resembling a dimly luminous cloud of dust. Not in scientific use.
4. minute particles of matter that fall to Earth from the stars. Not in scientific use.
Etymology: star (from Middle English sterre > Old English steorra; cognate with Old High German sterra; akin to Old High German sterno, Old Norse stjarna, Gothic stairno > Latin stella > Greek astḗr, > Sanskrit stṛ) + dust (from Middle English > Old English dūst; cognate with German Dunst, “vapour”).
[James R. Eads]