vuestro
/ˈbwestɾo/ · A1 · pron
yours
vuestro = vos (you all) + -tro, twin of nuestro (ours); from Latin vester
Spanish possessives pair up: nosotros → nuestro, vosotros → vuestro. Swap the n for a v and ours becomes yours (plural, informal, used in Spain). Latin vester is also behind French votre and Italian vostro.