interpreter
noun [ C ]
uk/ɪnˈtɜːprɪtər/ usa person whose job is to change what someone is saying into another language as that person is speaking:
act as/work as an interpreter She works as an interpreter for a news agency.
through/via an interpreter The business leader addressed the conference through an interpreter.
IT
a computer program that changes instructions into a form that can be understood and used by the computer
Compare
assembler