dust-off
n.β Β«Remember when we were out in the field and I couldnβt get any “D” rings for my ruck sack? And you told me if someone goes in on a dust-off to take them off their ruck? Well I did, thanks. They were on your ruck!Β» βby Mike Mancuso Letter Aug. 26, 1970. (source: Double-Tongued Dictionary)