V. S. Apte, The Practical Sanskrit–English Dictionary. Look up any word of the Gita in Devanagari, IAST or Harvard-Kyoto, or browse the headwords letter by letter.
Entry गोप
गोपgopa(-पी f.) [गुप्-अच्]
(-पीFeminine) गुप्-अच्
One who guards or protects; शालिगोप्यो जगुर्यशः R.4.2.