WordNet

win an athletic letter
the conventional characters of the alphabet used to represent speech; "his grandmother taught him his letters" (同)letter of the alphabet, alphabetic character
a written message addressed to a person or organization; "mailed an indignant letter to the editor" (同)missive
an award earned by participation in a school sport; "he won letters in three sports" (同)varsity letter
a strictly literal interpretation (as distinct from the intention); "he followed instructions to the letter"; "he obeyed the letter of the law"
owner who lets another person use something (housing usually) for hire
mark letters on or mark with letters
set down or print with letters

PrepTutorEJDIC

〈C〉『文字』,字 / 〈C〉『手紙』 / 〈C〉(人に特典・権利などを認める)公式の書状 / 〈U〉《the~》(精神・内容に対して)文字通りの意味,字句,字義 / 〈C〉(優秀な運動選手などがつけることを許される)学校のイニシャル / 《複数形で》《単数・複数扱い》文学,学問 / ‘に'文字を書き入る,レタリングをする