Older Republican-era transliteration of 'Everest'. Today the standard Chinese name is
珠穆朗玛峰 (Zhūmùlǎngmǎ Fēng) — the Tibetan name Chomolungma, meaning 'Goddess Mother of the World'. You may still see
额菲尔士峰 in pre-1950 books and Hong Kong/Taiwan sources.