What is "crannogs"

Usage examples of "crannogs".

Across the water on the lake shore, the town proper sprawled in the shallows - houses and shops built on pilings and crannogs in a welter of roofs and little boats.

While she paddled across, she concentrated on the town looming out of the mists on its crannogs and pilings, and she took care to land her little boat far away from the weavers compound as well.

At the edge of the lake on crannogs and shore stood the tangled houses of the city proper, while around them ran a huge circle of stone walls, where the town militia guarded shut gates.