piercing (adj.)youdaoicibaDictYouDict[piercing 词源字典]
in reference to cold, sound, etc., early 15c., present participle adjective from pierce (v.). Figuratively, of pain, grief, etc., from late 14c. Related: Piercingly.[piercing etymology, piercing origin, 英语词源]
piercing (n.)youdaoicibaDictYouDict
late 14c., verbal noun from pierce (v.).