Turf is just another word for grass, but it more often is used to refer a any formal or semi-formal area of grass used for a specific purpose; usually, but not exclusively sports related.
Yes you can.
However consider applying a mixture of sand and topsoil to a depth of about in inch over the top of the old turf, leveling it and seeding it with fast growing grass seed.
The old grass...
A 'turf rake' is a tool or machine which improves the health of the lawn by: de-thatching (removing old dead leaves) aerating (poking holes in the ground to allow air/moisture penetration, worm and...