Dictionary
back' or"der
Com.an order or part of an order waiting to be filled.
back-or•der
Pronunciation: (bak'ôr"dur), [key]—
v.t.
to treat as a back order:
We have to back-order your sofa until the new fabric arrives. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.