brush-written character; brush-stroke character
Refers to characters written with a brush, often in calligraphy or traditional writing.
年賀状には筆文字で「あけましておめでとう」と書いた。
I wrote 'Happy New Year' in brush characters on the New Year's card.
Compound of 筆 (fude, 'brush') and 文字 (moji, 'character').