[{"Bold_text": "verb (used without object)", "List Items": ["to listen attentively; hearken."]}, {"Bold_text": "verb (used with object)", "List Items": ["Archaic.to listen to; hear."]}, {"Bold_text": "noun", "List Items": ["a hunter's to hounds, as to encourage them in following the scent."]}, {"Bold_text": "verb phrase", "List Items": ["(of hounds) to return along the course in order to regain a lost scent.to return to a previous subject or point; revert:He kept harking back to his early days in vaudeville.", "(of hounds) to return along the course in order to regain a lost scent.", "to return to a previous subject or point; revert:He kept harking back to his early days in vaudeville."]}]