lye

The definition of lye is an alkaline solution that is often a mix of potassium or hydroxide or sodium which is generally used for cleaning.

(noun)

A strongly alkaline solution used to make soap is an example oflye.

See lye in Webster's New World College Dictionary

noun

Obsolete a strong, alkaline solution obtained by leaching wood ashes
any strongly alkaline substance, usually sodium or potassium hydroxide, used in cleaning, making soap, etc.
any substance obtained by leaching

Origin: ME lie < OE leag, akin to Ger lauge < IE base *lou-, to lave

See lye in American Heritage Dictionary 4

noun

Origin:

Origin: Middle English lie

Origin: , from Old English lēag; see leu(ə)- in Indo-European roots

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