What Is an Automated External Defibrillator? An automated external defibrillator (AED) is a portable device that checks the heart rhythm and can send an electric shock to the heart to try to restore a normal rhythm. AEDs are used to treat sudden cardiac arrest (SCA). SCA is a condition in which the heart suddenly and unexpectedly stops beating.
curl. 1  to form into coils or ringlets, as the hair. 2  to form into a spiral or curved shape; coil. 3  to adorn with, or as with, curls or ringlets. 4  to grow in or form curls or ringlets, as the hair. 5  to become curved or undulated. 6  to coil. 7  to play at the game of curling.
Curling, probably more than any other sport, has its own unique terminology (like hurry hard and burning a rock, among others). 1  Here are the key curling words and phrases you need to know to blend in at your next bonspiel: 2  Blank end: An end where no points are scored. 3  Bonspiel: A tournament in which curlers compete.