numberholder
nounUK /ˈnʌmbəˌhəʊldə/
US /ˈnʌmbərˌhoʊldər/
A numberholder is a thing or person that keeps a number safe.
The numberholder on the wall shows which room is next.
OTHER MEANINGS
2. A small stand or frame that holds printed numbers, like a table card.
She put the numberholder with the table number on the restaurant table.
3. A person whose job is to record and keep track of numbers.
The numberholder wrote down every score during the game.
4. A slot or clip that keeps a numbered ticket in place.
He slid his ticket into the numberholder by the door.