| Answer | Crossword Clue |
|---|---|
| SIRS | Honorific in a letter opening |
| WHOM | Word in a letter opening |
| TSLOT | Letter-shaped opening in a machine shop |
| TSLOT | Letter-shaped opening in some pistons |
| SLIT | Opening made by a letter opener |
| TSLOT | Letter-shaped opening for a bolt |
| DEARRIGA | Opening of a letter to a Baltic capital |
