defensor

noun
de·​fen·​sor | \ də̇ˈfen(t)sər, dēˈ-, -nˌsȯ(ə)r\
plural -s

Definition of defensor

1 obsolete : defender
2a Roman law : one who voluntarily undertook the defense of a case and gave security to satisfy the judgment
b : an advocate conducting the defense of a case in court
3 [ Late Latin, from Latin ] : an advocate in the later Roman Empire:
a : a municipal officer appointed to protect the people from oppression
b : a layperson or member of the clergy appointed to defend the rights and property of the church
4 [ Late Latin, from Latin ] : the patron of a church : an officer having charge of the temporal affairs of a church

History and Etymology for defensor

Middle English defensour, from Latin defensor, from defensus (past participle of defendere to defend) + -or

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