Meaning ofdoubletsin English

Noun

1. words with same root; different forms
2. two similar things; a pair
3. different accounts; same event
4. a pair of equal things; couple
5. two-part glass or crystal imitation gem; colored layer in between
6. microscope lenses correcting aberration; clearer image
7. pair of dice showing same number; identical face-up spots
8. close-fitting jacket; European men's 15th-17th century wear