Definition of "turfed"

The space of ground taken up by a rich man's house is prodigious, the turfed roof forming a small field.

1858 July, “Trebizonde and Erzeroum”, in The National Magazine, page 6

Viðimyri church is almost the only specimen remaining of a turf church. It looks outside very like a neatly turfed cottage, with the ornament of crossed planks with carved ends on its wooden front gable.

1905, Saga Book of the Viking Society for Northern Research, page 379

For aviaries, I like them not, except they be of that largeness as they may be turfed, and have living plants and bushes set in them; that the birds may have more scope, and natural nestling, and that no foulness appear in the floor of the aviary.

1625, Francis Bacon, “Of Gardens”, in Royal Collection Trust‎

3. The course should use a minimal amount of fairway area, rather than being completely turfed from tee box to green.

1988, Committee on Interior and Insular Affairs, House of Representatives, Preservation of petroglyphs in Albuquerque, New Mexico‎, page 225