life saver

• Persona o cosa que rescata a alguien de una situación difícil, peligrosa o estresante; se usa a menudo de manera informal para agradecer una ayuda oportuna.

A person or thing that rescues someone from a difficult, dangerous, or stressful situation, often used informally to express gratitude for timely help.

1. Someone or something that saves a lifeB1formal

   A person or thing that rescues someone from a life-threatening situation.

   salvavidas, salvador, persona que salva una vida

   • The lifeguard was a real life saver when he pulled the child from the pool.
   • The paramedics are true life savers.
   • The new medicine was a life saver for many patients.

2. Something that helps in a difficult situationB1informal

   An object, action, or person that provides crucial help or relief in a challenging or stressful situation.

   salvavidas

   • This GPS app is a life saver when I get lost.
   • Thank you for lending me your charger; you're a life saver!
   • Having an extra set of keys is a life saver in emergencies.