pyrgologist (n.)youdaoicibaDictYouDict[pyrgologist 词源字典]
"one versed in the structure and history of towers," 1877, from Greek pyrgos "a tower; highest point of a building" + -ologist. It seems to have been used once, in the "Athenaeum" of Aug. 18, and then forgotten except in the dictionary.[pyrgologist etymology, pyrgologist origin, 英语词源]