interpreter
US /ɪnˈtɝː.prə.t̬ɚ/
UK /ɪnˈtɝː.prə.t̬ɚ/

1.
a person who interprets, especially one who translates speech orally for others
:
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The diplomat spoke through an interpreter.
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She worked as a court interpreter for many years.
2.
a computer program that directly executes instructions written in a programming or scripting language, without requiring them previously to have been compiled into a machine-language program
:
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Python uses an interpreter to run its code.
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Unlike compiled languages, scripting languages often rely on an interpreter.