lepra

noun3

1. •
   (no longer used, rare) Any layer of algae, lichens, or other substance producing a leprosylike appearance on the surfaces of plants.

   • Lepra is frequently met with on the trunks, especially of young trees. — 1805
2. •
   (no longer used) Synonym of leprosy.

   • Lepra is an endemic, chronic, malignant, constitutional disease, due to a specific bacillus. — 1914
3. •
   (no longer used) Synonym of psoriasis.

   • Lepra and psoriasis are identical, though the two names are retained. — 1864