| backlog |
a quantity, as of work or objects, that has accumulated. [3 definitions] |
| back number |
any previous issue of a periodical. |
| back order |
part of an order that will be filled at a later date. |
| back-order |
to submit an order for (something) to be filled at a later time, as when (it) is available. |
| back out of |
to withdraw from prematurely. [2 definitions] |
| backpack |
a pack used to carry objects, esp. camping gear, on one's back; knapsack. [3 definitions] |
| back-pedal |
to press backward on the pedals of a bicycle or tricycle in order to brake. [3 definitions] |
| backrest |
something against which one can rest one's back. |
| back road |
(often pl.) a country road or local road that avoids traffic as well as high speed travel. |
| backscatter |
the deflection, by electromagnetic or nuclear forces, of moving waves or particles away from their original direction at angles greater than ninety degrees. |
| backscattering |
backscatter. |
| back seat |
a seat or seating area behind other seats, esp. of a vehicle. |
| back-seat driver |
a passenger who gives unsolicited advice about driving to the driver. |
| backside |
(informal) the fleshy portion of the body upon which one sits; buttocks. [2 definitions] |
| backslide |
to revert to moral wrongdoing or sin. |
| backspace |
to move a typewriter carriage or computer cursor back one or more spaces by pressing a certain key. [2 definitions] |
| backspin |
a reverse spin put on a ball, such as a billiard or tennis ball, that causes it to stop suddenly or move in a backward direction. |
| backstage |
to or in the areas of a theater stage that are not visible to the audience, esp. the wings and dressing rooms. [4 definitions] |
| backstairs |
secret or underhanded; clandestine. |
| backstay |
a rope that extends from the mast to the stern or side of a vessel to help support the mast. |
| back-step |
a step taken backwards. [2 definitions] |