<p><strong>Noun:</strong></p><ul><li>A small ball of naphthalene or sometimes of camphor for placing in closets or other storage areas to repel moths from clothing, blankets, etc.</li></ul><p><strong>Verb:</strong></p><ul><li>To put into storage or reserve; inactivate.</li></ul><p><strong>Adjective:</strong></p><ul><li>Inactive; unused; stored away: a mothball fleet.</li></ul><p><strong>End of Response</strong></p>