स्वस्तिsvastia letter.
Derived forms and compounds
स्वस्तीत्युक्त्वा महर्षिसिद्धसङ्घाः
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.