"instrument for loosening soil in digging, shaped like a pickaxe but with broad instead of pointed ends," Middle English mattok, from Old English mttoc, formerly said to be probably from Vulgar Latin *matteuca "club," which is related to Latin mateola, a kind of mallet (see mace (n.1)), but this is not certain, and synonymous Russian motyka, Polish motyka, Lithuanian matikas, as well as Old High German medela "plow," Middle High German metz "knife" suggest rather a PIE *mat- as source of the Latin, Germanic, and Slavic words. OED says similar words in Welsh and Gaelic are from English.
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