Linux

The wikipedia page you linked says otherwise.

On keyboards that lack a physical Meta key, its functionality may be invoked by other keys such as the Windows key or Macintosh's Option key.[4] However, software often provides another workaround, such as using the Alt key (which does not exist on the Knight keyboard), or using the Esc key as a prefix (e.g., in Emacs). Because of these workarounds, the need for Meta – despite being the most-used additional modifier key – was less than for other modifier keys. It is more common today to use the Windows key to emulate the Super key.

Relevant section:

At first, around 1996, it was common practice to make the Windows key act as Meta. However, because of the existing alternative keys for Meta in Emacs, the reintroduction of a hardware Meta key binding did not prove exceptionally useful. This made Super the next most frequently emulated key of choice, and thus it became the standard assignment for the Windows key under X11.

Most Linux software and documentation calls these keys "Super" keys. However, they are still referred to as KEY_LEFTMETA and KEY_RIGHTMETA in the kernel,[5] and some documentation such as that of KDE Plasma refers to it as just the Meta key.[6][7] "Windows" and ⌘[8] are also used in documentation.

No problem, though I must admit I'm curious about your keyboard as it is quite uncommon to not have one. Are you using an older keyboard that lacks one or one of the "winkeyless" enthusiast mechanical keyboards or maybe a really small form factor keyboard?