A back order is an order waiting until stock arrives again. Put it on back order.
The money is often taken at once, which is what makes a long one so irritating. A back order with no date is usually a polite way of saying nobody knows.
1nounback orderAn order waiting until stock arrives again.
“The back order took four months and arrived unannounced.”
back order is an order.
backorder comes from back + order.
Etymology from Wiktionary, CC BY-SA
Practised in Shopping & Money