army
‘a large body of armed troops organised and trained for land warfare’
Lexical development traced from the Tamil root:
E. harme, armeye, armye,armee ‘armed expedition’ < O.F. armée ‘armed troop’ < Med.Lat. armata ‘armed force’ < Lat. armata < armare ‘to arm,’ related to arma ‘tools, arms’ < aam < ar- < Tamil ār