| Answer | Crossword Clue |
|---|---|
| GEL | Pen filler, perhaps |
| HOGS | Pen filler |
| INK | Pen filler |
| SLOP | Pen filler |
| PIG | Pen filler? |
| CON | Pen filler |
| PIGS | Pen filler |
| CON | Pen filler? |
| HOG | Pen filler? |
| SHEEP | Pen filler |
| INK | Fountain-pen filler |
| INDIAINK | Certain pen filler |
| ENCRE | French pen filler |
| INK | Fountain pen filler |
| ENCRE | Pen filler, in France |
| DUMPYCARTRIDGE | Short, fat pen filler? |
