1. To call soldiers to duty. In usages 1-3, a noun or pronoun can be used between "order" and "up." The additional troops ordered up by the president descended on the small outpost. We were left waiting around, not knowing when the commander would order us up.
2. To place an order or request for something (for someone), especially food or drink. I went to the counter and ordered us up some hamburgers. We're looking to order up some new camping equipment. Can you make any recommendations?
3. interjection Food is ready! An expression often used in restaurants when an order of food is ready to be served. "Order up!" came the familiar call from the kitchen.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.