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writing brush; paintbrush; pen
writing with a brush; drawing with a brush; penmanship; something drawn with a brush
writing (composing text); the written word
(land) lot; plot
書道の授業で初めて筆を使って字を書いた。
I used a brush to write characters for the first time in calligraphy class.
彼は筆を持つと真剣な表情になった。
He got a serious expression when he held the brush.
この絵は何本もの筆を使い分けて描かれている。
This painting was made using many different brushes.