The descriptive name of a brahmin who visited the Buddha at the
Ajapālanigrodha seven days after his
Enlightenment and asked him questions regarding the true brahmin. The Buddha
explained the matter, but made no contact on him (Vin.i.2; see also Ud.i.4;
UdA.54; cf. Mtu.iii.325).
Buddhaghosa explains that the brahmin was a
ditthamangalika, filled with haughtiness and wrath, and went about uttering the
sound "hu-hum." hence his name.