The word volcaste is the preterite form of volcar in the second person singular. There are other translations for this conjugation.
See the full volcar conjugation

volcar

No volcaste nada en el cobertor de la silla, ¿no?
You didn't spill on the seat cover, did you?
¿Todo porque te volcaste el café?
All this because you spilled coffee on yourself?
¿Cómo volcaste el autobús?
How did you flip the bus?
Estaba en la mesa cuando la volcaste.
It was on the table when you overturned it!
Estaba en la mesa cuando la volcaste.
It was on the table when you overturned it! It had to fall here!
¿Cuándo fue la última vez que volcaste los datos de tu computadora?
When was the last time you dumped the data in your computer?
Volcaste tu corazón y tu alma en ese libro.
You poured your heart and soul into that book.
E iba ganando hasta que me golpeaste, cogiste el dinero, te volcaste encima de la mesa y echaste a correr.
And I was winning until you punched me, grabbed the money, tipped over the table and ran.
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