Ḫ

(h-breve below) is an extended Latin letter to transliterate
*Arabic ArabDIN|Ḫāʼ [IPA|χ]
*Akkadian [IPA|χ]
*Hittite laryngeal "h" (pronounced probably [x] or [h] ), see Hittite cuneiform
*Egyptian x, see Egyptian hieroglyphs