What is the meaning of Buller?

To boil or seethe.

The bubbling or seething of a torrent.

To make a lot of noise.

To force one's way; to be pushy.

A steer that allows itself to be mounted by bulls when in the crowded conditions of a feedlot.

A homosexual man.

to bubble

first-person singular present passive subjunctive of bullō

unpleasant noise (usually associated with mechanical sources such as engines and machinery rather than electric/electromechanical sources)

a loud rumble, as from thunder

Source: wiktionary.org