(phonetics) The "c" sound pronounced /k/, as in "cat" and "cabin", as distinct from the soft c, pronounced /s/, in "cent", "center" and "circuit".

(phonology) In many languages, a letter "c" which is not pronounced as a velar stop (/k/, like English "k") but as a sibilant (/s/, like English "s") or an affricative (/tʃ/, like English "ch").

(filmmaking) A standard wooden clothespin with a metal spring, used to hold gels to the barn doors of cinema lights.

(slang, euphemistic) cancer.

Initialism of British Central Africa., as overprinted on stamps of Rhodesia in 1891.

(music) The note exactly two octaves above middle C.

(music) the C note exactly one octave below middle C

(music) the C note exactly one octave above middle C

(music) the C note exactly two octaves below middle C

(music) A specific musical note, particularly the note C4, at approximately 261.6 hertz, appearing at the middle of the alto staff and directly between the treble and bass staves.