Фразеологизмы со словом back
At a time several weeks or months in the past. - Used with a.
We had a good rain a while back, but we need more now.
Grandfather is well now, but a while back he was in the hospital for three weeks.
дословно: в желтой обложке
Дешевый бульварный роман.
His grandma likes to read yellowbacks.
Его бабушка любит читать дешевые бульварные романы.