A serve in tennis is when you have the ball to start a game. For instance, the score is 3-4 games, you with 3 games won, and it is your turn to serve. A serve is when you hit the ball on the opposite side of the court in the square. Example: Standing on the right side to serve, you hit it in the square on the left side.
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.
To serve can mean several things. You can serve food and drink. You can serve a tennis ball. You can serve another person. Here are some sentences.Serve the coffee, please.His serve was too fast for me to hit with my tennis racquet.The maid will serve you while you're visiting me.
It means that someone has a good serve?
If by what you mean is are you allowed to hit the return before it bounces - NO.
You can hit an underhand serve in tennis; however, the overhand serve is more effective because it is more powerful. That is why you don't see the underhand serve used much.
a serve
Badly.
They Can Serve behind the baseline BEHIND and in line with the alley if that's what you mean. http://www.tennistips.org/doubles-tennis.HTML
A tennis ball!
It depends on how hard you want to hit the ball
a tennis ball
Let