Encyclopedia Iranica (Lak tribe)
LAK (or Lakk), an ethnic term used for a large number of people residing in a vast part of present-day Iran. The original meaning of the word in Persian, “hundred thousands,” apparently refers to the original number of families that constituted a nomadic tribal confederation (Širvāni, p. 522; Marduḵ, I, p. 109) …
M. Reza. Fariborz Hamzeh’ee, “LAK TRIBE,” Encyclopædia Iranica, online edition, 2015