Definition of yogh in English:

yogh

Pronunciation /yōɡ/ /joʊɡ/

noun

  • A Middle English letter (ʒ) used mainly where modern English has gh or y.

    ‘At some point, maybe with the invention of printing, some Scots started writing a yogh as a z.’
    • ‘The Scottish retained the yogh in personal and place names, albeit mutating into a ‘z’ to please the typesetters of the day.’

Origin

Middle English of unknown origin.