| Beavers' construction |
| Ring-shaped coral reef |
| Barriers constructed by beavers |
| Worshipped crossword constructor, e.g. (okay, I know, there aren't any, but a man can dream) |
| Coral reef border islands |
| Coral-island groupings |
| Company that bonded the Hoover Dam construction |
| Construction co. projects |
| American lake every constructor is sick of cluing, and "American lake" was probably enough to give it to you, so screw it |
| Coral rings |
| Ridge of coral |
| Coral islets |
| Colorful coral reef dweller |
| Beavers' constructions |
| About 4,000 miles of an above-average construction? |
| Coral ridges |
| Ring-shaped coral islands |
| Abraham Lincoln's construction project |
| Coral creations |
| Fastener at a construction site |
| Absolute proof at the construction site? |
| The Crossword Obsession: The History and Lore of the World's Most Popular Pastime" author Coral |
| Adobe construction |
| Fuller construction |
| Convention constructions |
| Actress Sally's home construction? |
| Construction beam fastener |
| Construction-site stack |
| Dam constructions |
| Angled construction beam |