NYT Crossword Tips
Tip: Use ? for unknown answer letters, e.g. AN??ER. Use the space bar to enter ? quickly.

Clue: "Word that must be added to 1-, 8-, 65- and 66-Across for their clues to make sense [with a visual hint in the grid]"

"Word that must be added to 1-, 8-, 65- and 66-Across for their clues to make sense [with a visual hint in the grid]" is a New York Times crossword puzzle clue that we have seen 1 time.