fetters, to fetter
釱 centers on physical restraint: metal fetters or shackles used to bind someone, and the act of putting them on.
釱 combines 金 (metal) with 大, which likely contributes a phonetic element. The character is used for metal fetters, fitting the metal radical.
Metal 金 on the left, and a large 大 shape on the right: imagine large metal shackles that bind a person.
For テイ, picture a metal fetter shaped like a T that restrains someone: T -> テイ, and the metal T binds them tightly.