To free or liberate someone or something from confinement or restraint; to set free. Can be used literally or figuratively (e.g., freeing emotions).
戦争で捕虜が解放された。
Prisoners were released during the liberation from war.
彼は旅行で日常のストレスから解放されたと感じた。
He felt liberated from daily stress by the trip.
囚人の解放には国際的な支援が必要だった。
International support was needed for the prisoners' release.
In computing, to deallocate memory or resources so they become available for other processes (e.g., freeing memory).
プログラム終了時に確保したメモリを必ず解放する必要がある。
You must always free the memory allocated when the program ends.