| Answer | Crossword Clue |
|---|---|
| bunghole | hole in a cask through which it is filled |
| touchhole | A small hole in early firearms through which the charge is ignited |
| tapholes | hole in a blast furnace, steelmaking furnace, etc., through which molten metal or slag is tapped off |
| taphole | hole in a blast furnace, steelmaking furnace, etc., through which molten metal or slag is tapped off |
| peephole | A small hole that may be looked through, esp. one in a door through which visitors may be identified before the door is opened |
| peepholes | A small hole that may be looked through, esp. one in a door through which visitors may be identified before the door is opened |
