<p><strong>Adjective</strong></p><ul><li>not directly known or experienced; obtained from others or from books:<ul><li>Most of our knowledge is secondhand.</li></ul></li><li>previously used or owned:<ul><li>secondhand clothes.</li></ul></li><li>dealing in previously used goods:<ul><li>a secondhand bookseller.</li></ul></li></ul><p><strong>Adverb</strong></p><ul><li>after another user or owner:<ul><li>He bought it secondhand.</li></ul></li><li>indirectly; at second hand:<ul><li>He heard the news secondhand.</li></ul></li></ul>