: a resinous substance secreted by a scale insect (Kerria lacca) and used chiefly in the form of shellac

Word History

Etymology

Persian lak & Hindi & Urdu lākh, from Sanskrit lākṣā

First Known Use

1657, in the meaning defined above

Time Traveler
The first known use of lac was in 1657

Browse Nearby Words

Cite this Entry

“Lac.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lac. Accessed 7 Nov. 2026.

Kids Definition

: a substance given off by a scale insect and used in the manufacture of shellac, lacquers, and sealing wax

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