无影灯

Astral \As"tral\, a. [L. astralis, fr. astrum star, Gr. ?: cf.
F. astral. See {Star}.]
1. Pertaining to, coming from, or resembling, the stars;
starry; starlike.

Shines only with an astral luster. --I. Taylor.

Some astral forms I must invoke by prayer. --Dryden.

2. (Biol.) Of or pertaining to an aster; as, astral rays;
astral sphere.
[Webster 1913 Suppl.]

3. (Theosophy) Consisting of, belonging to, or designating, a
kind of supersensible substance alleged to be next above
the tangible world in refinement; as, astral spirits;
astral bodies of persons; astral current; the astral
plane.
[Webster 1913 Suppl. +PJC]

{Astral lamp}, an Argand lamp so constructed that no shadow
is cast upon the table by the flattened ring-shaped
reservoir in which the oil is contained.

{Astral spirits}, spirits formerly supposed to live in the
heavenly bodies or the a["e]rial regions, and represented
in the Middle Ages as fallen angels, spirits of the dead,
or spirits originating in fire.