\ ˈyȯz \

Definition of yaws

: a contagious tropical disease especially of children caused by a spirochete (Treponema pertenue) closely resembling the causative agent of syphilis and marked by infectious ulcerative skin lesions with later bone involvement

called also frambesia

Examples of yaws in a Sentence

Recent Examples on the Web

Her own research has led her to suspect that the treponema bacteria originated in the New World, manifesting as yaws and spread through skin-to-skin contact exposed by a warm climate. National Geographic, "Syphilis DNA Pulled From Colonial-Era Bones," 21 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'yaws.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of yaws

1679, in the meaning defined above

History and Etymology for yaws

probably from an English-based creole of the Caribbean

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yaws fly



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The first known use of yaws was in 1679

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\ ˈyȯz \

Medical Definition of yaws

: an infectious contagious tropical disease that is caused by a spirochete of the genus Treponema (T. pertenue) and that is characterized by a primary ulcerating lesion on the skin followed by a secondary stage in which ulcers develop all over the body and by a third stage in which the bones are involved

called also frambesia, pian

More from Merriam-Webster on yaws

Rhyming Dictionary: Words that rhyme with yaws

Britannica.com: Encyclopedia article about yaws

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to express emotion in a dramatic way

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