dagger
‘a short-pointed weapon with sharp edges’
Lexical development traced from the Tamil root:
E. dager, daggere, dagar, daggar < O.F. dague ‘dagger’ < O.Prov. or Ital. daga < Vulgar Lat. daca ‘knife used by Dacian, an ancient barbarian people’ + -ard < O.F. -ard, -art < Proto-G. -hart/-hard ‘bold, hardy’ < guh < kar- < Tamil kaṭu