(Lit., ‘the revered book that is the Guru’; also: Adi Granth, the ‘first book’.) The sacred scripture of the Sikh tradition, containing poems in a number of dialects, many of which were composed by Guru Nanak (the first guru of the Sikh tradition) and other gurus. The tenth and last human guru, Guru Gobind Singh (d. 1708), invested the scripture with the role of guru.