1. rescuer(n = noun.person) deliverer, savior, saviour - a person who rescues you from harm or danger;
is a kind of benefactor, helper
has particulars: christ, messiah
Derived form verb rescue1
2. rescuer(n = noun.person) recoverer, saver - someone who saves something from danger or violence;
is a kind of individual, mortal, person, somebody, someone, soul
has particulars: salvager, salvor, succorer, succourer
One who rescues. [1913 Webster]