Place holder is a term used to describe a space in a document that can be filled with content at a later time. The three crossword solutions for the term place holder are ATLAS, DIGIT, and BOOKMARK. ATLAS is a 5 letter word meaning a book of maps or charts. DIGIT is a 5 letter word meaning a single symbol or character used in a numbering system. BOOKMARK is an 8 letter word meaning a marker used to save a place in a book.