yaws

Etymology 1

Uncertain.

noun

1. (pathology) A contagious tropical disease, caused by the spirochete Treponema pertenue, characterized by yellowish or reddish tumors, which often resemble berries.
   Other threats came from organisms co-evolving with humans, including tapeworms and such spirochaetes as Treponema, the agent of syphilis, and the similar skin infection, yaws. 1997, Roy Porter, The Greatest Benefit to Mankind, Folio Society, published 2016, page 16

Etymology 2

Inflected forms.

verb

1. third-person singular simple present indicative of yaw

noun

1. plural of yaw