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 संवर्तक
संवर्तकsaṃvartaka1 A kind of cloud.
1 A kind of cloud.
The fire of destruction, the fire that is to destroy the world at the period of universal destruction; इतोऽपि वडवानलः सह समस्तसंवर्तकैः Bh.2.76.