綴る (tsuzuru) means “spell” | MotiTan Japanese Dictionary

More examples

知らない単語は辞書で確認してから綴ります。shi ra na i tan go wa ji sho de kaku nin shi te ka ra tsuzu ri ma su

I check unfamiliar words in a dictionary before spelling them.

It describes building a word by arranging its letters in their proper sequence.

書くkaku: To produce letters or words in a written form.
表記するhyōkisuru: To write a word or name in a chosen written form.

語を構成する文字を正しい順序に並べて書く。go o kō sei su ru moji o tada shi i jun jo ni nara be te ka ku

綴る (tsuzuru, "to join or mend") is a native Japanese verb whose meanings extend from joining things to joining characters into words.

The English word spell has both a writing sense and a magic sense, but 綴る (tsuzuru) is used for the writing sense only.