coral reef(n = noun.object) - a reef consisting of coral consolidated into limestone;
is a kind of reef
has particulars: atoll, barrier reef, cay, florida key, key, great barrier reef

N  pitfall, rocks, reefs, coral reef, sunken rocks, snags, sands, quicksands, syrt, syrtis, Goodwin sands, sandy foundation, slippery ground, breakers, shoals, shallows, bank, shelf, flat, lee shore, ironbound coast, rock ahead, breakers ahead, precipice, maelstrom, volcano, ambush, pitfall, trapdoor, trap, sword of Damocles, wolf at the door, snake in the grass, death in the pot, latency, ugly customer, dangerous person, le chat qui dort, firebrand, hornet's nest, latet anquis in herba, proximus ardet Ucalegon.

african coral snake, asian coral snake, australian coral snake, barrier reef, battle of the coral sea, brain coral, capitol reef national park, common coral tree, coral, coral bean, coral bean tree, coral bush, coral drops, coral fish, coral fungus, coral gem, coral honeysuckle, coral necklace, coral pea, coral root, coral sea, coral snake, coral tree, coral vine, crested coral root, early coral root, eastern coral snake, gorgonian coral, great barrier reef, indian coral tree, madriporian coral, mushroom coral, new world coral snake, old world coral snake, pale coral root, precious coral, red coral, reef, reef knot, reef squirrelfish, reef whitetip shark, spotted coral root, stag's-horn coral, stag-horn coral, staghorn coral, stony coral, striped coral root, western australia coral pea, western coral snake