variable star(n = noun.object) variable - a star that varies noticeably in brightness;
is a kind of star
has particulars: north star, polar star, polaris, pole star, polestar

american star grass, basket star, binary star, blazing star, blue star, bog star, brittle star, bronze star, bronze star medal, chance variable, christmas star, dense blazing star, dependent variable, dog star, double star, evening star, experimental variable, feather star, film star, fixed star, flare star, giant star, giant star grass, golden star, guiding star, independent variable, morning star, movie star, multiple star, neutron star, north star, north star state, opera star, operatic star, polar star, pole star, prairie star, predictor variable, random variable, red dwarf star, red giant star, rock star, sea star, serpent star, shooting star, silver star, silver star medal, star, star anise, star aniseed, star apple, star begonia, star chamber, star chart, star crossed, star divination, star drift, star drill, star earthball, star fruit, star grass, star ipomoea, star jasmine, star magnolia, star of david, star of the veldt, star sapphire, star saxifrage, star shell, star sign, star spangled, star stereogram, star topology, star tulip, stochastic variable, sun star, television star, texas star, track star, tv star, variable, variable quantity, variable resistor, water star grass, white dwarf star, woodland star