double tap

Noun

 * 1)  A tactical shooting technique of pulling the trigger of a weapon twice in quick succession to deliver two shots to the same target zone.
 * 2) Two shots or bullets such fired.
 * 3)  A bombing strategy where the same target is attacked twice, with the second attack targeting rescuers and mourners.
 * 1)  A bombing strategy where the same target is attacked twice, with the second attack targeting rescuers and mourners.

Verb

 * 1) To shoot twice.
 * 2) To click twice on a touchscreen.