The Collaborative International Dictionary of English v.0.48:

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.
      [1913 Webster]

            Shines only with an astral luster.    --I. Taylor.
      [1913 Webster]

            Some astral forms I must invoke by prayer. --Dryden.
      [1913 Webster]

   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.
      [1913 Webster]

WordNet (r) 3.0 (2006):

astral
    adj 1: being or relating to or resembling or emanating from
           stars; "an astral body"; "stellar light" [syn: stellar,
           astral]

The Free On-line Dictionary of Computing (19 January 2023):

Astral

    A programming language based on Pascal, never
   implemented.

   ["ASTRAL: A Structured and Unified Approach to Database Design
   and Manipulation", T. Amble et al, in Proc of the Database
   Architecture Conf, Venice, June 1979].

   (2000-01-27)