This is the 7576th most frequent Russian word.
дубасу
The word "дубасу" is not standard in Russian. It might be colloquial or a misspelling. If you meant "дубасить," it means "to beat" or "to thrash" (informally).
Here, 'дубасит' is used to express forceful and rhythmic action, in this case playing a musical drum.
Иван дубасит барабан так ритмично, что все восхищаются.
Ivan plays the drum so rhythmically that everyone admires.
In this sentence, 'дубасу' refers to hitting strongly, specifically in the context of kicking a ball during a soccer game.
Петя дубасу по мячу, стараясь забить гол.
Petya kicks the ball forcefully, trying to score a goal.
Here, 'дубасу' describes the action of strongly hitting against something, emphasizing intensity such as knocking on a door.