A moustache is called Schnurrbart (purr beard), Oberlippenbart (upper lip beard) or Schnauzer(growler) in German.
Moustache or mustache are correct. It is kind of like color and colour. there are multiple ways to spell it.
Moustache
It is "moustache"
El bigote.
The correct spelling is "mustache."
In Britain, it is spelled moustache. In the US, it is spelled mustache.
The usual spelling is "mustache" but also "moustache."
The term may be spelled mustache or moustache(facial hair typically between the nose and upper lip).
because in german schnauzer or schnauz is mustache
mustache . 'Moustache' is the spelling that I know.
the same way you spell it in German
I believe you may be thinking of Hitler...