| Answer | Crossword Clue |
|---|---|
| prepreg | reinforcing material impregnated with resin |
| prepregs | PREPREG, reinforcing material impregnated with resin |
| tarpaper | A heavy paper impregnated with tar and used as a waterproofing material in building |
| gusset | to furnish with a reinforcing piece of material |
| gusseted | GUSSET, to furnish with a reinforcing piece of material |
| gusseting | the act of furnishing with a reinforcing piece of material |
