I. moth‧ball1 /ˈmɒθbɔːl $ ˈmɒːθbɒːl/
noun1. [countable usually plural] a small ball made of a strong-smelling chemical, used for keeping moths away from clothes
2. in/into mothballs kept but not used for a long time:
With the end of the Cold War, several warships were put into mothballs. [TahlilGaran] Dictionary of Contemporary English ▲
II. mothball2 verb [transitive] to stop using a factory, equipment etc or to not continue with a plan, temporarily but possibly for a long time:
The hospital manager said the project would be mothballed until funding became available. [TahlilGaran] Dictionary of Contemporary English ▲