A first-person pronoun (I/me), typically used by males; somewhat casual.
僕は今日、図書館へ行きます。
I'm going to the library today.
僕の名前は田中です。
My name is Tanaka.
僕がこの仕事をやります。
I'll do this job.
小学生の時、僕はサッカーが好きだった。
When I was in elementary school, I liked soccer.
Colloquially and rarely, used to address a young boy meaning 'you' (a vocative usage); limited and context-specific.
おばあさんが近所の僕に『僕、元気にしてるかい？』と声をかけた。
The grandmother called to the neighborhood boy, 'You there, are you well?'.
祭りで年長者が小さな僕に話しかけた。
At the festival an elder spoke to a little boy (using 'boku' vocatively).
Archaic noun meaning a manservant or servant; seen in historical or literary contexts.
江戸時代の記録には『僕が主人に仕えていた』とある。
Records from the Edo period state, 'a manservant served his master.'