Vulture's Peak  (Sanskrit, Gṛdhrakūṭa; Pāli, Gijjhakūṭa). A hill in Bihar, so-named because its peak was shaped like a vulture's beak or because many of the birds lived there. One of a group of five hills surrounding the ancient city of Rājagṛha it was in a remote area popular with ascetics. The location is frequently mentioned in both early and late sources (for example, the Lotus Sūtra) as the site of teachings given by the Buddha.

A Dictionary of Buddhism, Oxford University Press, 2003, 2004 (which is available in electronic version from answer.com)