letter

noun

a written message addressed to a person or organization
“mailed an indignant letter to the editor”
missive
an award earned by participation in a school sport
“I won letters in three sports.”
varsity letter
the conventional characters of the alphabet used to represent speech
“Their grandmother taught them their letters.”
letter of the alphabetalphabetic character
a strictly literal interpretation, as distinct from the intention
“I followed instructions to the letter.”
owner who lets another person use something (housing usually) for hire

verb