From charash; probably a pick-axe -- mattock.
see HEBREW charash
H4281. machareshah
[מַחֲרֶ֫שֶׁת מַחֲרֵשָׁה,] noun feminine ploughshare — singular suffix מַחֲרַשְׁתּוֺ אִישׁ לִלְטוֺשׁ 1 Samuel 8:20 to sharpen each man his ploughshare 13:20 (+ קַרְדֻּמּוֺ אֵתוֺ,) + מַחֲרֵשָׁתוֺ 13:20, read probably דָּרְבָּנוֺ his goad (so ᵑ6 ᵐ5 We Dr, see 13:21); plural absolute מַחֲרֵשֹׁת 13:21 (+ similar list; on text of both verses see Dr).