on the shelf

For instance, a store employee might tell a customer, “We have that item on the shelf. It’s right over there. ”
In a library context, a librarian might say, “We have many books on the shelf that cover that topic. ”
A person recommending a restaurant might say, “They always have fresh ingredients on the shelf for their dishes. ”
2 -
leave something on the shelf
not noticed or not used
مورد توجه قرار نگرفته یا استفاده نشده
It's important to apply research in a practical way and not leave it on the shelf.
3 -
mainly UK informal
If someone, usually a woman, is on the shelf, she is not married and is considered too old for anyone to want to marry her
اگر شخصی، معمولاً یک زن، در on the shelf باشد، یعنی ازدواج نکرده و برای کسی که بخواهد با او ازدواج کند خیلی پیر تلقی می شود.
In those days, if you hadn't married by the time you were 30, you were definitely on the shelf.
4 -
delayed
با تاخیر
Plans to start a free film series have been put on the shelf.