What is the meaning of Lues?

A plague or disease, especially syphilis.

third-person singular simple present indicative of lue

fine

shredded

thin

delicate

syphilis

indefinite genitive singular of lue

synonym of syfilis (“syphilis”)

syphilis

feminine plural of lu

syphilis

plague, pestilence, epidemic

plague, misfortune

a disease, chiefly syphilis

second-person singular future active indicative of luō

quiet

slow

syphilis

lues

Source: wiktionary.org