1. twins(n = noun.substance) - (mineralogy) two interwoven crystals that are mirror images on each other;
is a kind of crystal
2. twins(n = noun.location) gemini, gemini the twins - the third sign of the zodiac; the sun is in this sign from about May 21 to June 20;
is a kind of house, mansion, planetary house, sign, sign of the zodiac, star sign
N duality, dualism, duplicity, biplicity, biformity, polarity, two, deuce, couple, duet, brace, pair, cheeks, twins, Castor and Pollux, gemini, Siamese twins, fellows, yoke, conjugation, dispermy, doublets, dyad, span, two, twin, dual, dualistic, double, binary, binomial, twin, biparous, dyadic, conduplicate, duplex, biduous, binate, diphyletic, dispermic, unijugate, tete-a-tete, coupled, conjugate, both, both the one and the other.