1. To erupt or burst forth from something all at once or very quickly. He started to laugh and milk spurted out of his mouth. You need to make sure this is sealed tight so oil doesn't spurt out of the motor while the machine is running.

2. To eject or spew some liquid out something all at once or very quickly. In this usage, a noun or pronoun can be used between "spurt" and "out." The kettle spurted steam out of its spout when the water began to boil. We took turns spurting water out of our mouths to see who could do it the farthest.