• (America, CA) IPA: /ˈmʌstæʃ/
• (RP, AU, New Zealand) IPA: /məsˈtɑːʃ/

mustache (plural mustaches)

1. (US) Alternative spelling of moustache.
   • 1908, W[illiam] B[lair] M[orton] Ferguson, chapter IV, in Zollenstein, New York, N.Y.: D. Appleton & Company, OCLC 731476803 ↗:

     “My Continental prominence is improving,” I commented dryly. ¶ Von Lindowe cut at a furze bush with his silver-mounted rattan. ¶ “Quite so,” he said as dryly, his hand at his mustache. “I may say if your intentions were known your life would not be worth a curse.”