To knock someone down or overwhelm someone emotionally.

To surprise someone greatly.

किसी को बहुत ज्यादा आश्चर्यचकित करना।

English Usage: She was bowled over by the news of her promotion.

Hindi Usage: उसे अपने पदोन्नति की खबर सुनकर बहुत आश्चर्य हुआ।