dob in verb3 •(slang) To betray (someone) by informing on them.I can't believe you dobbed her in. •(Australia, slang) To nominate a person, often in their absence, for an unpleasant task.I arrived just after the meeting had started and found myself dobbed in to take the minutes. •(Australia, slang) To contribute (something).We all dobbed in for a gift when he retired. formsdobbed in · dobbing in · dobs in