<p><strong>Noun:</strong></p><ul><li>A dog kept to guard property.</li><li>A watchful guardian:<ul><li>A self-appointed watchdog of the public morals.</li></ul></li></ul><p><strong>Adjective:</strong></p><ul><li>Of, relating to, or characteristic of a watchdog.</li><li>Organized or functioning as a watchful guardian, especially against illegal or unethical conduct:<ul><li>A watchdog group in the legislature.</li></ul></li></ul><p><strong>Verb (used with object):</strong></p><ul><li>Watch·dogged, watch·dog·ging:<ul><li>To watch carefully, especially so as to detect illegal or unethical conduct.</li></ul></li></ul><p><strong>End of Response</strong></p>