The term 'USE A TASER' can be summarized by two crossword solutions: ZAP (3 letters) and STUN (4 letters). A Taser is an electroshock weapon that uses electrical current to disrupt voluntary control of muscles, causing 'neuromuscular incapacitation'. It is used by law enforcement officers as a less-lethal alternative to firearms. The terms 'ZAP' and 'STUN' refer to the effects of the weapon, which temporarily incapacitates the target.