This is the 10679th most frequent Russian word.
волю
"Волю" means "will" or "freedom" (accusative case of "воля").
Here, 'волю' is used in the accusative case singular form of the noun 'воля', meaning 'will' or 'freedom', to imply providing freedom to emotions.
Он дал полный волю своим эмоциям.
He gave full rein to his emotions.
In this sentence, 'волю' refers to 'freedom' or 'liberty', directly indicating the state of being free from confinement.
На волю выходит тот, кто отбывает срок.
The one who serves their sentence is set free.
Here, 'волю' is part of the phrase referring to someone's 'will' or desire, demonstrating a determination or intention.