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 द्युक्ष
द्युक्षdyukṣaa.Ved.
Vedic
Celestial, heavenly.
Shining, brilliant.
Derived forms and compounds
-क्षः An epithet of (1) Varuṇa, (2) Aryaman, (3) Indra, (4) Agni, (5) Soma.