九きゅうぎゅうのいちもう九牛の一毛表記・読み:九牛一毛・きゅうぎゅうのいちもう1small fraction (of); drop in the bucket; drop in the oceanexpressions (phrases, clauses, etc.)名詞idiomatic expressionyojijukugo札へ残す語をコピー