Meaning of the word "capital letter" in English

What does "capital letter" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

capital letter

US /ˈkæp.ɪ.təl ˈlet̬.ɚ/
UK /ˈkæp.ɪ.təl ˈlet.ər/

Noun

a letter of the alphabet that is written or printed in a large form, for example at the beginning of a sentence or a name

Example:
Always start a sentence with a capital letter.
Proper nouns should always begin with a capital letter.