A bulb syringe is a small tool with a rubber bulb attached to a tube. It is used to suck and release fluids, like water or medicine, by squeezing and releasing the bulb. Full definition
I don't recommend the blue bulb syringes for trying to clear out baby's nose. (get-your-baby-to-sleep.com)
Most new parents get a rubber bulb syringe in their newborn kit from the hospital for this purpose, and it generally works pretty well. (babycenter.com)
You can try the classic blue bulb syringe alone to try to clear out their noses, but most babies hate that. (get-your-baby-to-sleep.com)