In prison movies, there's always a character who is able to procure all sorts of contraband from the inside — magazines, playing cards, special soap. If you procure something, you get it or bring it about by special effort.
Procure's synonym obtain is a little formal, but less formal than procure itself. The noun procurement commonly refers to the obtaining of materials and supplies. Procure descends from Middle English procuren, from Old French procurer, "to take care of," from Latin prōcūrāre, formed from the prefix prō-, "for", plus cūrāre, "to care for."