protégé
Concise Oxford English Dictionary © 2008 Oxford University Press:
protégé /ˈprɒtɪʒeɪ, -tɛʒeɪ, ˈprəʊ-/
▶noun (fem. protégée pronunc. same) a person who is guided and supported by an older and more experienced or influential person.
– origin C18: Fr., lit. ‘protected’, past part. of protéger.
'protégé' also found in these Oxford entries:

