Noun. Classifier: &e. Brush.(PAN: buRuk 'rotten', PC: brGk 'rotten'). Adjective. Intensive: bru hia. Rotten, spoiled.bi bru Transitive verb. To make rot, to make spoil. Meaning 1 Brush. Meaning 2 Rotten, spoiled. Meaning 3 bi bru: To make rot, to make spoil.