a buoyant jacket, belt, or other like device for keeping a person afloat.
a weapon, especially a short stick with a weighted head; blackjack.
) a club or bludgeon, esp one kept for self-defence
) a life belt or life jacket
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Life preserver means a flotation device used by an aircraft occupant if the aircraft ditches in water.
And if possible, throw a life preserver or floatation device.
Keep lifesaving equipment, such as a pole, life preserver and rope in the pool area.
Accompanying the remains were portions of a pilot's flight suit and a pneumatic life preserver.
He discovered two boaters clinging to one life preserver.
Make sure everyone in the boat has a life preserver.