Noun galaxy has 3 senses
  1. galaxy - a splendid assemblage (especially of famous people)
    --1 is a kind of
    collection, aggregation, accumulation, assemblage
  2. galax, galaxy, wandflower, beetleweed, coltsfoot, Galax urceolata - tufted evergreen perennial herb having spikes of tiny white flowers and glossy green round to heart-shaped leaves that become coppery to maroon or purplish in fall
    --2 is a kind of herb, herbaceous plant
    --2 is a member of genus Galax
  3. galaxy, extragalactic nebula - (astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust; "`extragalactic nebula' is a former name for `galaxy'"
    --3 is a kind of collection, aggregation, accumulation, assemblage
    --3 is a member of
     universe, existence, creation, world, cosmos, macrocosm
    --3 has members: star
    --3 has substances: cosmic dust
    --3 has particulars:
     spiral galaxy, spiral nebula; Great Attractor; Magellanic Cloud; Milky Way, Milky Way Galaxy, Milky Way System
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