It is actually the real name of the singleton instance of the Unit type!

事实上这是Unit类型单体实例的真正名字！

youdao

Being close to wild roses in appearance, the singleton fits the unfussy modern garden.

这种样子和野生蔷薇差不多的品种可以种植在那些不是很讲究的现代花园。

youdao

When copies of the singleton class run in multiple VMs, an instance is created for each machine.

当单例类的副本运行于多个虚拟机中时，每个虚拟机都会为其创建一个实例对象。

youdao

The new plant is bottling Johnnie Walker, Old Parr, Dimple, Cardhu and The Singleton single malt.

BBC: Fife Diageo bottling plant officially opens

Glen Ord produces spirit for Diageo's portfolio of blended Scotch whiskies, as well as for The Singleton of Glen Ord single malt.

BBC: Diageo plans Glen Ord distillery expansion

At the same time, Singleton is looking to integrate the Internet into his grand scheme.

FORBES: Where's Dean?