NOUN (1)

1. a teacher of or believer in Bahaism;


ADJECTIVE (1)

1. of or relating to Bahaism;

The Collaborative International Dictionary of English v.0.48:

Bahai \Ba*hai"\ (b[.a]*h[imac]"), n.; pl. Bahais (-h[imac]z).
   A member of the sect of the Babis consisting of the adherents
   of Baha (Mirza Husain Ali, entitled "Baha 'u 'llah," or, "the
   Splendor of God"), the elder half brother of Mirza Yahya of
   Nur, who succeeded the Bab as the head of the Babists. Baha
   in 1863 declared himself the supreme prophet of the sect, and
   became its recognized head. There are upwards of 20,000
   Bahais in the United States.
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

Bahai
    adj 1: of or relating to Bahaism
    n 1: a teacher of or believer in Bahaism