信:

PinYin: xin xìn   Chinese Characters of HSK : 甲级

"信" is made up of two radicals, which respectively indicate people and words. Literally speaking, "信" means people’s words. "捎口信 (shāo kǒuxìn)" means sending a message. "寄书信 (jì shūxìn)" means mailing a letter. "诚信(chéng xìn)" means one is reliable and keeps his promise.

“信”字由人与言组成，信就是人的话。把一个人的话带给别人，叫捎口信；把人的话写下来邮寄给别人叫寄书信。人的话实事求是叫诚信，有信用。

English Definition:

1.honest
2.to trust; to believe
3.to believe in
4.a letter
5.a message
6.at will

Meaning 
 
Letter; Keep one's promise

Sentence
 
 
商人要牢记诚信经营的原则！
Businessman should be faithful and keep their promises.

随着电脑网络的使用，写信的人越来越少了！
With the spread of computers, fewer and fewer people are writing letters now.

你一定要相信我说的话。
You should believe in my words.

Chinese dictionary to see on the "信" to explain more

Keyword: Chinese Characters,