Two of the same kind; a pair; a couple.
A word or words
unintentionally doubled or set up a second time.
A close-fitting garment for men, covering
the body from the neck to the waist or a little below. It was worn in
Western Europe from the 15th to the 17th century.
A counterfeit gem,
composed of two pieces of crystal, with a color them, and thus giving
the appearance of a naturally colored gem. Also, a piece of paste or
glass covered by a veneer of real stone.
An 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.
Two dice, each of
which, when thrown, has the same number of spots on the face lying
uppermost; as, to throw doublets.
A game somewhat like
backgammon.
One of two or more words in the same
language derived by different courses from the same original from;
as, crypt and grot are doublets; also,
guard and ward; yard and garden;
abridge and abbreviate, etc.
In celebration of Noah Webster's Birthday (October 16, 2009), we have prepared an updated website. 
