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.
(a) Ejection, spitting out, vomiting, giving out, emitting; खर्जूरी- स्कन्धनद्धानां मदोद्गरसुगन्धिषु R.4.57; Bh.2.36; सलिलो- द्गारमुच्चैर्विमानाः Me.65, धूमोद्गारानुकृतिनिपुणा जर्जरा निष्पतन्ति Me.71; Śi.12.9. (b) Oozing, flowing out, stream, issuing out; सनिर्झरोद्गार इवाद्रिराजः R.6.6; रुधिरdenotes that the rest of the word under consideration is to be suppliedदिग्धा- खिलाङ्गाः Mv.6.33.
Repeating, narration, citing repeatedly; पुरावृत्तोद्गारैरपि च कचिता कार्यपदवी Māl.2.13; सामdenotes that the rest of the word under consideration is to be supplied K.42; H.3.99; सौजन्यdenotes that the rest of the word under consideration is to be supplied Mv.4 expression of goodness.
Sound, roaring, echo, hissing sound (शब्दः, कण्ठगर्जनं नागवायुकर्म); Śānti.1.21; गम्भीरगह्वरdenotes that the rest of the word under consideration is to be supplied Māl.9.