1. Of a liquid, to eject, flow, or issue forth in the direction of someone or something in one or more forceful spurts. I can feel water squirting at us, but I can't see where it's coming from! She pierced the steamed pudding with a fork, and hot molten chocolate squirted right at her face.

2. To eject or issue forth (some liquid) in the direction of someone or something in one or more forceful spurts. A noun or pronoun can be used between "squirt" and "at" to specify what is being squirted. The toy has a motion detector, and it squirts at you when you walk by. Some vandal squirted paint thinner at the famous painting, totally ruining it.

3. To cause some contraption or implement to eject or issue forth some liquid in the direction of someone or something in one or more forceful spurts. In this usage, a noun or pronoun is used between "squirt" and "at." Mom told me to stop squirting my water gun at people in the courtyard below us. The doctor squirted the eye-dropper at my eyes.