<p><strong>Noun:</strong></p><ul><li>Any of various small insectivorous mammals, especially of the family Talpidae, living chiefly underground, and having velvety fur, very small eyes, and strong forefeet.</li><li>A spy who becomes part of and works from within the ranks of an enemy governmental staff or intelligence agency: Compare double agent.</li><li>Machinery: a large, powerful machine for boring through earth or rock, used in the construction of tunnels.</li></ul><p><strong>End of Response</strong></p>