1. (

• pompon ,
• pom-pom ,

) decoration consisting of a ball of tufted wool or silk; usually worn on a hat ;

2. (

• antiaircraft ,
• antiaircraft_gun ,
• flak ,
• flack ,
• pom-pom ,
• ack-ack ,
• ack-ack_gun

) artillery designed to shoot upward at airplanes ;