BABA, a Persian word meaning \'father\' or \'grandfather\', is used among Sikhs as a title of affection and reverence. In its original Persian context, Baba is a title used for superiors of the Qalandar order of the Sufis, but as transferred to India its meaning extends to cover the old as well as any faqiror sannyasi of recognized piety. This was also one of Guru Nanak\'s honorific titles during his lifetime. It assumed a hereditary character and all the physical descendants of the Gurus were generally addressed by this title. Apart from them, the title was also applied to one who combined piety with the exercise of a secular authority.
BAVANJA KAVI, lit. fifty-two poets, is how the galaxy of poets and scholars who attended on Guru Gobind Singh (1666-1708) is popularly designated. Guru Gobind Singh, Nanak X, prophet and soldier, was an accomplished poet and also a great patron of letters. According to Sarup Das Bhalla, Mahima Prakash, he sent out Sikhs to different parts of the country to invite and bring to him scholars of repute. His instruction was: "Let them bring with them works pertaining to the fields they specialize in." When they came, "the True Guru bestowed great respect and honour upon them and provided for them without discrimination.
BHAI, of Indo Aryan origin (Sanskrit bhratr, Pali bhaya), means brother in its literal sense and is employed as an honorific as well as in the dominant familial sense and as a title of affection between equals. It has been used in the Guru Granth Sahib in the latter sense and there are several apostrophic examples none of which seems to imply any special rank or status. However, by the middle of the seventeenth century, it was being used as a title implying distinction: the earliest example is the Bala Janam Sakhi (AD 1658) which refers to its putative author as Bhai Bala. The naturalness of its use in this particular context suggests that it must have developed the honorific connotation even earlier though it does not necessarily follow that these connotations were clearly apprehended in earlier usage.