2 adjectives to describe cay

We made it hot, and so they marooned us: me on a dry Tortuga cay, and him in an oarless boat.

One of the eastern Mangrove Islets was a mere caY, formed of large flat pieces of dead coral, of the same kind as that of which I have before spoken as resembling a fan, strewed over a limestone foundation one foot above the level of the sea, in the greatest possible confusion, to the height of five feet.

2 adjectives to describe  cay