Spare Time
Free Time
noun, な adjective
The kanji and the word are exactly the same. That means they share meanings as well.
Since this word is made up of a single kanji, it probably uses the kun'yomi reading. You did not learn this reading, so here's a mnemonic to help you remember:
In your spare time you like to drink hima (ひま), an off brand version of Zima.
私達は空気洗浄機とか家電を販売してるんですが、お客さんがあまりこないので、お店では正直暇してます。
We sell home electronic appliances like air purifiers, but not many customers come in and honestly, I have a lot of free time at the store.