An uncouth or ignorant man or boy.
More example sentences
- That's Tears and Rust, not Tears ‘in’ Rust, you shower of bosthoons.
- He had stood there, like a big bostoon of a boy, open-mouthed and speechless since she had first arrived.
- Maybe one day I'll take a fancy to one of them and go off to live like a lady, and not be treated like a great strapping bosthoon of a hired hand.
mid 19th century: from Irish bastún.