The letter of the law.
Had to adhere to the letter of the law.
To letter a poster.
Lettered the paper.
Lettered our name on the mailbox.
To letter one's name.
She lettered in three collegiate sports.
An example of letter is A.
An example of letter is what a child sends to his pen pal.
An example of letter is to earn an award in college basketball.
Benjamin Franklin was multiskilled - a scientist, politician and a man of letters.
I wrote a letter to my sister about my life.
The letter of a room.