| Answer | Crossword Clue |
|---|---|
| STICKY | Hard to open |
| PLAIT | Lock that's hard to open? |
| securing | Make (a door or container) hard to open; fasten or lock |
| secured | Make (a door or container) hard to open; fasten or lock |
| hawfinches | A large Old World finch with a massive bill for cracking open cherrystones and other hard seeds |
| popcorn | Corn of a variety with hard kernels that swell up and burst open with a pop when heated |
