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 कुम्ब
कुम्बkumbaVed.
Vedic
A kind of head-dress for women (?) कुरीरमस्य शीर्षणि कुम्बं चाधिनिदध्मसि Av.6.138.3.