one of a pair of matching single beds, particularly in a hotel or guest room intended for two people
(of a camera) having two identical sets of lenses, either for taking stereoscopic pictures, or with one forming an image for viewing and the other an image to be photographed (twin-lens reflex)
a town which has established official or social links with another, typically in a different country
(of a washing machine) having two separate top-loading drums, one for washing and the other for spin-drying
a commercial and industrial city in south central Idaho, on the Snake River; population 42,197 (est. 2008)
(of a ship) having two propellers on separate shafts with opposite twists
a mostly rural region comprising several counties in Pennsylvania and New York that lie along the border between the two states
the two main buildings of the World Trade Center in New York, destroyed in terrorist attacks on 11 September 2001
the apparent paradox arising from relativity theory that if one of a pair of twins makes a long journey at near the speed of light and then returns, he or she will have aged less than the twin who remains behind
the smaller and less completely developed member of a pair of unequal conjoined twins, often consisting of an amorphous mass of tissue attached to or within the larger twin
twins that are physically joined at birth, sometimes sharing organs, and sometimes separable by surgery (depending on the degree of fusion)
(of a camera) having two identical sets of lenses, either for taking stereoscopic pictures, or with one forming an image for viewing and the other an image to be photographed (twin-lens reflex)