निबोधnibodhaधनम् [dhanam], धनम् 1 Understanding, learning.
अस्माकं तु विशिष्टा ये तान्निबोध द्विजोत्तम ।
कोशःDictionaries
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.