From tsuwr; a stone (as if pressed hard or to a point); (by implication, of use) a knife -- flint, sharp stone.
see HEBREW tsuwr
H6864. tsor
II. צֹר noun [masculine] id.; — ׳צ used as knife Exodus 4:25; in compare, מִצ חָזָק ׳כְּשָׁמִיר Ezekiel 3:9; plural צֻרִים חַרְכוֺת Joshua 5:2-3,knives of flint. — חַרְכּוֺ צזּר Psalm 89:44 is dubious, ׳צ usually taken as = צֹר, and then either flint of his sword (i.e. sword sharp as flint, Bae), or edge (like flint) of his sword (most); We leaves untranslated; הַצֻּדִים חֶלְקַת 2 Samuel 2:16 see I. חֶלְקָה — Job 22:24 see I. צוּר below V. צור. I. צֹר.