Definitions

1. verb

to remove an obstruction from (a mechanical device, such as a door or drawer) so that it can move freely

“She had to unjam the stuck drawer to find her lost keys.”

2. verb

to free something that has become stuck or obstructed, especially a mechanical device

“Can you unjam the printer so we can print our report?”

3. noun

the act of removing an obstruction from a mechanical device

“The unjam was a bit tricky, but it eventually came loose.”