also: ちんぼ
noun
Vulgar or childish word for penis; used mainly by children or in very informal, often crude, adult speech. Not appropriate in polite conversation.
小さい子が「チンポ」と言って笑っていた。
A little kid was laughing while saying 'chinpo'.
あの漫画はチンポの話ばかりで下品だ。
That manga is vulgar, full of dick jokes.
More childish and euphemistic; often used by or with very young children.
Formal, medical term for penis.
The exact derivation is uncertain; likely a sound-symbolic or baby-talk formation, possibly related to ちんちん (penis, childish).