A cylindrical device on which film, magnetic tape, thread, or other flexible materials can be wound; it typically has a hole in the center for mounting.

She carefully wound the thread around the spool to prevent it from tangling.

A cylindrical rod or plug with enlarged ends that slides inside a valve body to control the flow of fluid.

The hydraulic system failed because the spool inside the control valve had worn down.

Computing: a buffer or queue that holds data waiting to be transferred to a peripheral device.

The print job stalled when the spool on the server became full.

A quantity or length of thread, wire, film, or similar material wound on a spool and treated as a single unit for sale or use.

He bought a spool of copper wire to complete the wiring job.

A quantity or length of thread, wire, film, etc., wound around a spool.

He grabbed a spool of solder from the toolbox.

spoolverb

To wind (a thread, wire, or other flexible material) onto a spool.

She carefully spooled the thread onto the bobbin before starting her sewing project.

To send data to a device or program in a way that allows it to be processed sequentially.

The computer spooled the print job to the printer, ensuring each page was printed in order.

To accelerate (a turbine, turbocharger, etc.) to operating speed, often rapidly; usually followed by “up.”

The jet engines spooled up with a sharp whine before take-off.

spooladjektiv

Relating to or resembling a spool; used before another noun.

The mechanic ordered a replacement spool valve assembly.