Definition of bucko in English:

bucko

Syllabification: buck·o
Pronunciation: /ˈbəkō
 
/

noun (plural buckoes or buckos)

informal
  • A young man (often as a form of address): now hold on a minute, bucko
    More example sentences
    • ‘Okay that's enough information there, bucko,’ Torrie yelled from the other side of the wall but not looking, trying to keep what was left of her sanity.
    • Choose one liquor and stick to it for the night, bucko.
    • Do the crossword puzzle yourself for once, bucko.

Origin

late 19th century (originally nautical slang): from buck1 + -o.

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