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 युवन्
युवन्yuvana.Young, youthful, adult, arrived at puberty.
[यौतीति युवा, यु-कनिन् Uṇ.1.154] (युवतिः -ती or यूनीFeminine; compar. यवीयस् or कनीयस्; superl. यविष्ठ or कनिष्ठ)