blue-sky law

noun

: a law providing for the regulation of the sale of securities (such as stock)

Word History

First Known Use

1911, in the meaning defined above

Time Traveler
The first known use of blue-sky law was in 1911

Rhymes for blue-sky law

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blue sky
blue-sky law
blue slate
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Cite this Entry

“Blue-sky law.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blue-sky%20law. Accessed 10 Jul. 2025.

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Legal Definition

blue-sky law

noun
: a law providing for the regulation (as through registration) of the sale of securities (as stock) for the purpose of preventing fraud
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