מסמר

Hebrew

Root
ס־מ־ר (s-m-r)

Spelling borrowed from Aramaic מַסְמְרָא (masmərā, “pin, nail”).

Cognate with Arabic مسمار.

מַסְמֵר • (masmér) m (plural indefinite מַסְמֵרִים)

Fraenkel, Siegmund (1886) Die aramäischen Fremdwörter im Arabischen (in German), Leiden: E. J. Brill, page 89
Haupt, Paul (1917) “The Disease of King Teumman of Elam”, in Journal of the Society of Oriental Research‎^[1], volume 1, page 90, derives the Aramaic and Hebrew from Assyrian Akkadian with s₁ as first radical, connecting to שָׁמִיר (šāmī́r, “adamant”), decidedly ignoring the occurrence in Qohelet with s₂ and claiming a vocalization masmár for the Hebrew, but a corresponding term in Akkadian seems still not attested and שָׁמִיר (šāmī́r, “adamant”) is probably an unproductive technical term.
H4930 in Strong, James (1979) Strong’s Exhaustive Concordance to the Bible
“מסמר” in the Hebrew Terms Database of the Academy of Hebrew Language