LEARNit Dictionary
life preserver
noun
/ˈlaɪf prɪzɜːvə(r)/
UK
/ˈlaɪf prɪzɜːrvər/
US
1
a piece of material that floats well, often in the shape of a ring, or a jacket made of such material, used to rescue a person who has fallen into water, by keeping them above water
حلقه نجات, جلیقه نجات