nuestro
our
nos
us
+
-tro
possessive suffix
Nuestro means our and can be thought of as nos0 (us0) + -tro1 (possessive suffix1).
adjective
- ourBelonging to or associated with the speaker and one or more othersEste es nuestro coche. // This is our car.
pronoun
- oursThat which belongs to usEste libro es el nuestro. // This book is ours.