Element Grouping of Gemini, Libra and Aquarius
Puzzle 8 of Women Inventors Hard Pack
Question is: Element Grouping of Gemini, Libra and Aquarius
and the answer is: AIRSIGN
Word Meaning:
AIR SIGN — (astrology) Any of the three star signs Aquarius, Gemini and Libra.
Definitions from Wiktionary.