あたまひとつ

頭一つ

表記・読み：頭ひとつ・あたまひとつ

1. 1

   a head (e.g. taller or shorter)

   expressions (phrases, clauses, etc.)名詞
2. 2

   noticeable difference (in competitors' results)

   expressions (phrases, clauses, etc.)名詞