1. The top layer of soil and grass in a natural field or a sport's playing area: "The maintenance staff kept the turf smooth and even for the soccer players."
2. A track for horse racing: "We watched the horses cut up the turf as they raced around the track."

Primarily British: To remove forcefully: "After the customer had become rowdy, the owner decided to turf the customer out the door."

1. An area or a place that is controlled by a group who feel that it is their home: "Our basketball team beat their opponents on their own turf."
2. The territory or portion of a city that is claimed by a gang for its activities: "The gang leader sent a message to the other gang saying that if they know what's good for them, they will stay out of his turf."
3. In a figurative sense, dealing with an unfamiliar subject: "In the first chapter of his book, the writer seems to be presenting information about a topic which is on unfamiliar turf for him."