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1. To fit, fasten, or equip (with something). Tom just bought a new motorcycle that's been rigged out with a super powerful engine. I'm planning on rigging out my computer with a new processor and some extra memory once I save up a bit of money.
2. To clothe or be dressed, especially in a fancy or fashionable attire. Well, it looks like Jeremy rigged out nicely for the prom. I've got to get home and rig out before our big date tonight.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.