curly cuh

From the shape of the letter.

• (UK) IPA^(key): /ˈkɜːli kə/

curly cuh (plural curly cuhs)

1. (British, childish) The letter C, as distinct from the letter K ("kicking kuh").
   • 2014, Dave Gorman, Too Much Information, Random House, page 181:

     Or did it start as Kill It Bang before they decided to soften it slightly by changing the kicking kuh to a curly cuh?

   • 2018, Alan R. Jones, Best Fit Lines & Curves: And Some Mathe-Magical Transformations, Routledge, page 174:

     (Sometimes these are spelt with a kicking ‘kuh’ rather than a curly ‘cuh’ as ‘homoskedasticity’ and ‘heteroskedasticity’.)