The story
- Proto-Indo-European*h₂lek-
- Proto-Indo-European*h₂lékseti
- Proto-Indo-Iranian*Hrákšati
- Proto-Iranian*karah
- Middle Persianlškl
- Classical Persianلَشْکَر (laškar)
- Urduلشکرِ
- English todayLashkar
Borrowed from Urdu لشکرِ (“army”).
Etymology from Wiktionary, CC BY-SA 4.0.