Yesterday, I parked my car, and when I got out I saw a small pool of green liquid on the ground, and some smoke coming out of my hood. My first thought was that it boiled over, but when I popped the hood I looked inside and saw that there was a small hose next to the top right corner of the engine block that had sprung a leak, and it was spraying Anti-Freeze anto the engine block, which was causing the smoke.

I put a little tape over it, and poured some more anti-freeze mixed with water into the radiator and drove home. My question is: is it safe to drive it for now just as long as I keep putting in anti-freeze? Also, does anyone know what that part is? I have no clue what it does. Can I get it plugged, or will I need a new part?