Do you mean "let"? If so, a let is when a serve touches/nicks the net AND lands in on a player's serve. People call "let" so the server knows their serve hit the net. If a server hits a let, they get to redo their serve.
Define GET in tennis
You probably mean "Lawn" tennis. Lawn tennis is simply tennis played on a grass court.
means - front side of the tennis field
It's basically rankings in Tennis.
What do you mean by example? Striking the tennis ball with your racquet? Or are you asking how to show someone how to play tennis?
something to do with Tennis, as this is the famous Tennis match series.
'Des tennis' are most probably 'des (chaussures de) tennis' which are tennis shoes in English. That could also stand for 'des (terrains de) tennis', which are tennis courts.
"des tennis" are the sport shoes called sneakers in English.
6 games in a season of tennis 6 games in a season of tennis