Answer: yogh

AnswerCrossword Clue
YOGHMiddle English letter
yoghthe letter ? used especially in Middle English chiefly to represent voiced and voiceless velar and palatal fricatives
yoghthe letter used in the writing of Middle English to represent a palatal fricative, as in ung (Modern English young) or a velar fricative, as in litliche (Modern English lightly)
yoghthe ME letter