[{"Bold_text": "verb (used without object)", "List Items": ["to beat with increased force or rapidity, as the heart under the influence of emotion or excitement; palpitate .", "to feel or exhibit emotion:He throbbed at the happy thought.", "to pulsate ; vibrate :The cello throbbed."]}, {"Bold_text": "noun", "List Items": ["the act of throbbing.", "a violent beat or pulsation, as of the heart.", "any pulsation or vibration:the throb of engines."]}]