What is Kadima, and what does the word mean?

Kadima is political party in Israel. Kadima literally means forward in English.

https://en.wikipedia.org/wiki/Kadima

Kadima is also a paddle ball game that is frequently played at the beach. It is very much like tennis but with no net. A Kadima set usually includes 2 wooden paddles and 1 ball about the size of a handball or racquetball. The object is to see how many times you and your opponent (or co-player) can return the ball back and forth. It's great fun.