Meaning of frenching in English:

frenching

Pronunciation /ˈfrɛn(t)ʃɪŋ/

noun

North American Botany
  • A symptom of various (chiefly fungal) plant diseases, especially affecting cotton and tobacco, in which the leaves become discoloured and in some cases distorted.

Origin

Mid 19th century; earliest use found in De Bow's Review. From French + -ing.