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 तोल
तोलtolaलम् [lam], लम् [तुल्-कर्मणि अच्]
लम्lam, लम्तुल्-कर्मणि अच्
Weight or quantity measured by the balance.
A weight of gold or silver equal to 12 māṣas or a tolā.