star sign star·sign uncommon noun 1. (astrology) one of 12 equal areas into which the zodiac is divided Synonymssign of the zodiacstar signsignmansionhouseplanetary house Related words Broader terms region Narrower terms AriesTaurusGeminiCancerLeoVirgoLibraScorpio Parts zodiac WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.