A chain of small islands off the tip of the Florida peninsula. Linked to each other and to the mainland by a series of causeways and bridges forming the Overseas Highway, the islands extend south-westwards over a distance of 160 km (100 miles).
Definition of Florida Keys in US English:
Florida Keys
proper noun
A chain of small islands off the tip of the Florida peninsula. Linked to each other and to the mainland by a series of causeways and bridges that form the Overseas Highway, the islands extend southwest over a distance of 100 miles (160 km).