François's diacritic

• Mark under a consonant
• Diacritical mark under a 'c'
• Spanish diacritic
• Façade part
• A French letter might have one
• Mark under a consonant in French, perhaps
• Mark under a French c
• Letter attachment?

WordNet Word definitions in WordNet
n. a diacritical mark (,) placed below the letter c to indicate that it is pronounced as an s

Wiktionary Word definitions in Wiktionary
n. (context orthography English) In the spelling of Catalan, French, Portuguese and some other languages, a mark sometimes placed under the letter (term: c) to indicate that it is pronounced /s/ rather than /k/, as in French ''menaçant'' and Portuguese ...