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 विदारक
विदारकvidāraka1 A tearer, divider.
1 A tearer, divider.
A tree or rock in the middle of a stream (which divides its course).