仏法僧

Etymology
From.

As a bird name, onomatopoeia: see the etymology at the entry for the katakana spelling ブッポウソウ. Its kanji spelling comes from the on'yomi of the katakana, and is a reference to the of Buddhism.

Noun

 * 1) the Triple Gem or  of Buddhism, i.e. Buddha, dharma, sangha
 * 2) dollarbird