et denotes an implement used for writing or engraving, including iron instruments used on lasting surfaces.

The attested use is an instrument for inscribing: it is associated with writing Judah’s sin, a scribe’s writing, and words hewn into rock. In Psalm 45:2, the absolute form occurs in a clause whose specific contribution is not visible in the supplied APB rendering.

1. Instrument for writing or engraving · dominant

   In Jeremiah 17:1 the construct form occurs where Judah’s sin is written with an iron instrument and engraved on a heart-tablet and altar horns. Jeremiah 8:8 places the construct form in the clause about the scribes’ writing, while Job 19:24 uses it with iron and lead for words hewn into rock.

   Jeremiah 17:1Jeremiah 8:8Job 19:24

In the Anselm Project Bible: The APB explicitly uses “stylus” in Jeremiah 17:1 and Job 19:24 and “pen” in Jeremiah 8:8. Its supplied rendering of Psalm 45:2 does not visibly represent the term, so the translation cannot isolate its contribution there.