The Collaborative International Dictionary of English v.0.48:
Galaxy \Gal"ax*y\, n.; pl. Galaxies. [F. galaxie, L. galaxias,
fr. Gr. ? (sc. ? circle), fr. ?, ?, milk; akin to L. lac. Cf.
1. The Milky Way, that luminous tract, or belt, which is seen
at night stretching across the heavens, and which is
composed of innumerable stars, so distant and blended as
to be distinguishable only with the telescope. --Nichol.
2. A very large collection of stars comparable in size to the
Milky Way system, held together by gravitational force and
separated from other such star systems by large distances
of mostly empty space. Galaxies vary widely in shape and
size, the most common nearby galaxies being over 70,000
light years in diameter and separated from each other by
even larger distances. The number of stars in one galaxy
varies, and may extend into the hundreds of billions.
3. A splendid or impressive assemblage of persons or things;
as, a galaxy of movie stars.
[1913 Webster + PJC] Galban