<p><strong>Noun</strong></p><ul><li>A wedgelike, spherical, or other striking end of a hammer head opposite the face.</li></ul><p><strong>Verb</strong></p><ul><li>(used with object) To enlarge, straighten, or smooth with a peen.</li><li>To strengthen (a metal surface) by light hammering or by bombardment with steel balls or shot.</li></ul><p><strong>End of Response</strong></p>