The ping of a client is basically the amount of time (ms) it takes for packets to be sent to a server you're playing on.
Think of it this way: you're calling someone FAR away. There is a delay for the message to be received, right? That 'delay' in gaming is your ping. The 'message' would be your kill on someone, so for instance, if you killed someone, the server would notify you of that kill n number of seconds (where n=ping). You'd want it to be low, so you don't lag so much.
Your ping might be high because of a bad internet connection, or maybe because of the distance between your computer's location and the server's location. The nearer the server, the lower the ping; which is why it is recommended that you play on servers nearer to you.
Hope this helped. :)
Think of it this way: you're calling someone FAR away. There is a delay for the message to be received, right? That 'delay' in gaming is your ping. The 'message' would be your kill on someone, so for instance, if you killed someone, the server would notify you of that kill n number of seconds (where n=ping). You'd want it to be low, so you don't lag so much.
Your ping might be high because of a bad internet connection, or maybe because of the distance between your computer's location and the server's location. The nearer the server, the lower the ping; which is why it is recommended that you play on servers nearer to you.
Hope this helped. :)