Definition of "Tris"

Tris¹

/tɹɪs/

proper noun
1. A diminutive of the male given name Tristram or Tristan.

Tris²

/tɹɪs/

proper noun
1. A diminutive of the female given name Patricia or Beatrice.
  Quotations
  “This is Tris Prior. Her brother, Caleb. And their friend Susan Black.” “Prior,” she says. “I know of several Priors, but none of them are named Tris. Beatrice, however..."
  2012, Veronica Roth, Insurgent, eclub40
  I said, 'Are you Isabel or Tris?'I'm Tris. Patricia.' She was back to her hair, eyes crammed to the side, snapping off dry split ends and flicking them to the floor.
  2009, Gregg Hurwitz, We Know, Hachette UK

Tris³

/tɹɪs/

proper noun
1. plural of Tri