What does ‘hook’ mean?

( v ) To addict. They say Zelda is hooked on heroine.
( v ) To steal. He hooked a book on criminal justice and it turned his life around.
( n ) To get someone addicted to. I think Melvin is hooked on Gwendolyn; I saw her wearing his Yankees cap this morning.
( n ) The ordinary. Wow, Millie! Those new jeans are off the hook!