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 माहेश्वर
माहेश्वरmāheśvaraa.(-री f.)
(-रीFeminine)
Belonging to a great lord or to Śiva; अनेन च महाराज माहेश्वरमनुत्तमम् । इष्ट्वा यज्ञं ... Rām. 6.7.19.