Young lad; friend, pal (used in addressing someone)
The definition of a bucko is a bossy person.
An example of bucko is someone who rudely tells others what to do.
A blustering or bossy person.
A young man; fellow.
A young man; a lad.
A blustering or swaggering fellow; bully.
Origin of bucko
- Alteration of buck
From American Heritage Dictionary of the English Language, 5th Edition