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 उत्कार
उत्कारutkāraWinnowing corn.
[कॄ-घञ् कॄ धान्येParasmaipadaIII.3.3]
Winnowing corn.
Piling up corn. उत्कारेण धान्यानामनभीष्टपरिग्रहाः Bk.