prison, arrest
圄 centers on confinement and restraint: a prison that holds someone, or the act of arresting to take them into custody.
圄 combines the enclosure 囗 with 吾, which likely contributes the sound. The character expresses the idea of being confined or imprisoned.
The outer 囗 is a walled enclosure, and inside is 吾 (oneself). Picture yourself locked inside a walled prison.
For ゴ, imagine a guard saying 'Go!' as they lock you inside the prison: Go -> ゴ.