What is the meaning of Buse?

hawk or buzzard (genus Buteo)

idiot, fool

fail (fail of an exam, in school)

inflection of buser:

1. first/third-person singular present indicative/subjunctive
2. second-person singular imperative

first/third-person singular present indicative/subjunctive

second-person singular imperative

nozzle

pipe, conduit

to use foul words during an agitated argument

someone uncivil and antisocial (usually a male); a ruffian

kiss, smooch

Source: wiktionary.org