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 षट्क
षट्कṣaṭkaa.Sixfold.
Sixfold.
Bought for six etc.; ParasmaipadaV.1.22.
Derived forms and compounds
-कः Six.
-कम्
An aggregate of six; मासषट्क, पूर्वषट्क, उत्तरषट्कetc.
The six passions collectively viz. काम, मद, मान, लोभ, हर्ष, and रुषा).