"very," 1815, from French très, from Old French tres, from Latin trans "beyond" (see trans-), later "very" (cf. Old Italian trafreddo "very cold").
Examples from the Web for tres
The autumn saw the release of the 1989 novel, The Third Reich, and a collection of poems, Tres.Beyond Another Bolaño Release: Other Great Latino Writers|Robert Birnbaum|April 20, 2012|DAILY BEAST
Tres equitum centurias constituit, populum in triginta curias distribuit.Selections from Viri Romae|Charles Franois L'Homond
Tres noches despus tombamos caf varios amigos en el precioso casino de Almera.Novelas Cortas|Pedro Antonio de Alarcn
"I'm tres old and tres bored, Tom," said Amory one day, stretching himself at ease in the comfortable window-seat.This Side of Paradise|F. Scott Fitzgerald