| Answer | Crossword Clue |
|---|---|
| NIXIE | Undeliverable letter, in post-office slang |
| NIXIE | Undeliverable letter, in post-office talk |
| NIXIE | Dead letter, in post office talk |
| NIXY | Letter the Post Office cannot deliver. |
| Answer | Crossword Clue |
|---|---|
| NIXIE | Undeliverable letter, in post-office slang |
| NIXIE | Undeliverable letter, in post-office talk |
| NIXIE | Dead letter, in post office talk |
| NIXY | Letter the Post Office cannot deliver. |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.