firstcapitalletter
nounUK /ˌfɜːst ˈkæpɪtl ˈletə/
US /ˌfɜːrst ˈkæpɪtl ˈletər/
The first letter of a word is written as a big letter.
In the name 'Anna', the first capital letter is 'A'.
OTHER MEANINGS
2. The first big letter at the start of a sentence.
Every sentence begins with a first capital letter.
3. The first big letter in someone's name.
Write your first capital letter clearly on the form.
4. The first big letter in a title or heading.
The title's first capital letter stands out in bold.