1. back order - Noun
2. back order - Verb
back order (plural back orders)
An order that cannot be currently filled or shipped, but is requested nonetheless for when the item becomes available again.
back order (third-person singular simple present back orders, present participle back ordering, simple past and past participle back ordered)
To treat as a back order.
President Cyril Ramaphosa called for people to be calm and ordered South Africa police to exercise restraint in dealing with the protests and held talks with ANC provincial ANC leaders in a bid to bring back order on the ground. Source: Internet
The hats and T-shirts are so popular, most of the items are on back order until May. Source: Internet