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 ओह
ओहohaVed.
Vedic
Bringing, performing; ऋध्यामा त ओहैः Rv.4.1.1.
Reaching.
Meditation.
A vehicle, means; गोरोहेण तौग्ऱ्यो न जिव्रिः Rv.1.18.5.
Derived forms and compounds
-ब्रह्मन्Adjective one who has sacred knowledge. ओहब्रह्माणो वि चरन्त्यु त्वे Rv.1.71.8.