serpigo
noun
ser·pi·go
(ˌ)sərˈpī(ˌ)gō,
-pē(-
plural serpigines
-pijəˌnēz
or serpigoes archaic
: a creeping or spreading skin disease (such as ringworm)
Word History
Etymology
Middle English, from Medieval Latin serpigin-, serpigo, from Latin serpere to creep