engrasaron
-they greased
The word engrasaron is the preterite form of engrasar in the third person plural.
See the full engrasar conjugation

engrasar

El policía dejó entrar a los matones sin revisarlos porque lo engrasaron.
The policeman let the thugs in without frisking them because they bribed him.
Engrasaron la parte de arriba de la pared.
They've greased the top of the wall.
Recuerda que te engrasaron el eje muchas veces.
May I remind you that you got your axle greased a fair amount in the process?
¡Qué pena! ¡Se me engrasaron los pantalones cuando me arrodillé!
What a shame! My pants got stained with grease when I kneeled down!
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