<p><strong>Verb</strong></p><ul><li>to lie or wait in concealment, as a person in ambush; remain in or around a place secretly or furtively</li><li>to go furtively; slink; steal</li><li>to exist unperceived or unsuspected</li><li>to read or observe an ongoing discussion without participating in it, as on a message board</li></ul><p><strong>Noun</strong></p><ul><li>an underhand scheme; dodge</li><li>an easy, somewhat lazy or unethical way of earning a living, performing a task, etc.</li><li>a hideout</li></ul>