to put sb in prison; to put sth in a safe place that can be locked
lock sb up / awayinformal
to put sb in prison
lock sth up / away
to put sth in a safe place that can be locked
lock sth up / away
to put money into an investment that you cannot easily turn into cash
Their capital is all locked up in property.
Definitions from the Oxford Advanced Learner's Dictionary, 9th edition