cutlass (n.)

1590s, from Middle French coutelas (16c.), probably from Italian coltellaccio "large knife" (with augmentative suffix -accio), from coltello "knife," from Latin cultellus "small knife," diminutive of culter "knife, plowshare," from PIE *kel-tro-, suffixed form of root *skel- (1) "to cut."

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