Vīrya (Hinduism)
Vīrya (Sanskrit वीर्य) literally  means "state of a strong man" or "manliness."  In Hindu Vedic literature, the term is often associated with heroism and virility. In Brahmacharya in Hinduism, Virya also refers to semen in a male and it is considered to be the 'vital fluid'. Loss of Virya from the body is avoided in Brahmacharya.

Vedic literature
Vīryà as "manly" and "hero" can be found, for instance, in the following excerpts from the Rig Veda (RV).

RV, Mandala 1, Hymn 32, v. 1

1. I will declare the manly deeds of Indra, the first that he achieved, the Thunder-wielder.  He slew the Dragon, then disclosed the waters, and cleft the channels of the mountain torrents.

RV, Mandala 1, Hymn 103, vv. 5-7

5. See this abundant wealth that he possesses, and put your trust in Indra's hero vigour.  He found the cattle, and he found the horses, he found the plants, the forests and the waters.

6. To him the truly strong, whose deeds are many, to him the strong Bull let us pour the Soma.  The Hero, watching like a thief in ambush, goes parting the possessions of the godless.

7. Well didst thou do that hero deed, O Indra, in waking with thy bolt the slumbering Ahi. In thee, delighted, Dames divine rejoiced them, the flying Maruts and all Gods were joyful.