1Square or rectangular in shape — an i-adjective describing something with four corners or a boxy, angular form.
四角い箱にプレゼントを入れた。
I put the present in a square box.
あのテーブルは四角いので、端に物を置きやすい。
That table is square, so it's easy to put things along the edges.
彼の字は四角くてとても読みやすい。
His handwriting is square and blocky, making it very easy to read.
四角い顔が特徴的な俳優だ。
He's an actor known for his square-shaped face.