Neelkanth
When the ocean of milk was being churned by the devas and asuras, there appeared a deadly poison known as halahal. This poison had the capacity to destroy the entire creation. Lord Shiva instantly drank the entire poison. Goddess Parvati caught hold of his neck to stop the poison from entering his body and so it remained in his throat making it blue. Therefore Lord Shiva came to be known as Neelkanth (the blue-throated lord).
