twinners

Noun

twinner (plural twinners)

1. One who gives birth to twins; a breeder of twins.
   • Ewes yeerly by twinning rich maisters doo make,
     the lamb of such twinners for breeders go take1557 February 13 (Gregorian calendar), Thomas Tusser, A Hundreth Good Pointes of Husbandrie, London: […] Richard Tottel, →OCLC; republished London: […] Robert Triphook, […], and William Sancho, […]...
2. One who visits or interacts with a sister city of their own city.
   • Beyond correspondence, twinners around the country got very interested in elaborating their relation to their paired city by visiting it.1993, John Lofland, Polite Protesters: The American Peace Movement of the 1980s, Syracuse University Press, →ISBN, page 58
3. (uncommon) One who is identical, is similar, or is a counterpart, to another person.
   • The twinner of Jack's ailing mother, a faded movie actress named Lily Cavanaugh (who was billed in her time as the “Queen of the B Movies”), […]2016, John C. Tibbetts, The Gothic Worlds of Peter Straub, McFarland, →ISBN, page 149