שִׁיר הַשִּׁירִים
The Hebrew name for the Song of Solomon (Canticle of Canticles), meaning "Song of Songs."
Pope Clement VIII, Jerome's Prefaces, On Worship
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I. THE HELMETED PROLOGUE.
— Jerome identifies Sir Hassirim as the Hebrew designation for the Song of Songs
"The fifth, the Song of Songs, which they designate by the title Sir Hassirim."