games — an amusement or pastime: children's games.
grinds — (Ireland, colloquial, plurale tantum) tutoring; extra lessons in a specific subject outside of school hours. Grinds are often given by private individuals or firms, and might not be provided by the school.
keeps — to hold or retain in one's possession; hold as one's own: If you like it, keep it. Keep the change.
rackets — a light bat having a netting of catgut or nylon stretched in a more or less oval frame and used for striking the ball in tennis, the shuttlecock in badminton, etc.
things — (in Scandinavian countries) a public meeting or assembly, especially a legislative assembly or a court of law.