Definition of "stonewalled"

Leading from the terrace to the old stonewalled garden is a flight of stone steps.

1906, Ernest W. Dormer, “Memories of Ufton Court”, in The Antiquary, volume 42, page 418

The stonewalled farmhouse is of the late 16th century or the early 17th, extended southwards in the early 19th century

1953, Ralph Bernard Pugh, The Victoria History of Wiltshire, page 72

In fact, one of the few main differences was that Doreen's house had an old stonewalled shed back near the cliffs, and Carl's didn't.

2004, Sigmund Brouwer, The Missing Map of Pirate's Haven, page 53