English letter; alphabetic character
Refers to letters of the English alphabet, often in contrast to Japanese characters. Common in contexts like 英字新聞 (English-language newspaper) or 英字キーボード (QWERTY keyboard).
パスワードには英字と数字を両方使ってください。
Please use both letters and numbers in your password.
この書類は英字で記入してください。
Please fill out this form in English letters.
On a passport, you write your name in English letters.
I submitted the address written out in English letters.
alphabetic code
alphabetic coded set