What is definition of letters?

Answer 1

1. Characters in an alphabet.

2. Correspondence in written form.

3. Learning in the liberal arts ("He is a man of letters")

Answer 2

Letters are characters of an alphabet that are used to represent specific sounds in written language, allowing for communication by forming words, sentences, and paragraphs. They are the building blocks of written language and can be combined in various ways to convey meaning and information.