Definitions
1.NounA pair of two similar or equal things; couple.
2.NounOne of two or more different words in a language derived from the same etymological root but having different phonological forms (e.g., toucher and toquer in French or shade and shadow in English). See also Appendix:Glossary#doublet.
3.NounIn textual criticism, two different narrative accounts of the same actual event.
4.NounAn imitation gem made of two pieces of glass or crystal with a layer of color between them.
5.NounA word or phrase set a second time by mistake.
6.NounA quantum state of a system with a spin of ½, such that there are two allowed values of the spin component, −½ and +½.
7.NounA word (or rather, a halfword) consisting of two bytes.
8.NounA very small flowering plant, Dimeresia howellii.
9.NounA word ladder puzzle.
10.NounAn arrangement of two lenses for a microscope, designed to correct spherical aberration and chromatic dispersion, thus rendering the image of an object more clear and distinct.
11.NounEither of two dice, each of which, when thrown, has the same number of spots on the face lying uppermost."to throw doublets"
12.NounA game somewhat like backgammon.
13.NounDipole antenna.
14.NounA man’s waistcoat.
15.NounA man’s close-fitting jacket, with or without sleeves, worn by European men from the 1400s to the 1600s.