frozen over

But when the snow does come, cried Dora Lockwood, if the pond is still frozen over, wont it be a great course?

They followed the greyhound, who led them to a piece of water frozen over.

We started on a beautiful day after a sharp frost at night, causing many of the ponds to be frozen over.

It is really a dry glacier here but with snow frozen over the surface making many pitfalls.

The narrow strait would scarcely hinder any migration either east or west, especially as it is frequently frozen over in winter.