| Answer | Crossword Clue |
|---|---|
| fibroin | indigestible protein that is a principal component of spider webs and silk |
| Answer | Crossword Clue |
|---|---|
| fibroin | indigestible protein that is a principal component of spider webs and silk |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.