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

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