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 take

   1557 February 13 (Gregorian calendar), Thomas Tusser, A Hundreth Good Pointes of Husbandrie, London: […] Richard Tottel, →OCLC; republished London: […] Robert Triphook, […], and William Sancho, […], 1810, →OCLC

   1 more example

   In the former or first four pregnancies the proportion of twinners in a hundred twinners is smaller than the proportion of child-bearers in a hundred : […]

   1865, The Edinburgh Medical and Surgical Journal ..., page 777

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. uncommonfictionOne who is identical, is similar, or is a counterpart, to another person.

   Everyone, that is, except for Jack; his twinner, Jason, died as a baby and has become something of a mythical character in the alternate world, […]

   2020, Debbie Olson, Children and Childhood in the Works of Stephen King, Lexington Books, →ISBN, page 185

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   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