चातुरर्थिकcāturarthika
[चतुर्षु अर्थेषु विहितः ठक्] (In Grammar) A suffix added to words in four different senses.
कोशःDictionaries
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.