fulfill, carry out, turn (an age), have (a birthday)
Yo siempre cumplo con lo que digo.
I always do what I say.
Cumplo treinta el próximo lunes.
I turn thirty next Monday.
Today I turn twenty-five.
Que a más tardar le cumplo pasado mañana.
That I’ll have it done for you by the day after tomorrow at the latest.
— Amores perros (2000)