<p><strong>Noun</strong></p><ul><li>surface-to-air missile.</li><li>Space Available Mail: a special air service for sending parcels weighing up to 15 pounds (6.8 kilograms) to overseas members of the armed forces: only the regular parcel post rate to the U.S. port of shipment is charged.</li></ul><p><strong>End of Response</strong></p>