lakh also lac (läk, lăk)
Chiefly South Asian
1. One hundred thousand: created three lakh jobs; worth one lakh fifty thousand rupees.
2. A large, indefinite number: lakhs of birds in the sky.
[Hindi and Urdu lākh, from Prakrit lakkha-, from Sanskrit lakṣaḥ, sign, token, prize, one hundred thousand; probably akin to Middle Persian daxšag, sign, and Hittite tekkušša-, to show.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.