to fasten someone or something to something else using a chain, especially in order to prevent them from escaping or being stolen
chain somebody/something to something
a bicycle chained to the fence
Four activists chained themselves to the gates.
chain somebody/something up
The elephants were chained up by their legs.
chain somebody/something together
Their hands and feet were chained together.
to have your freedom restricted because of something you must do:
She felt chained to the kitchen sink.
I don't want a job where I'm chained to a desk all day.