The phrase "center dot" refers to a small dot located at the center of something. It is often used in mathematics and computer programming to represent multiplication or as a symbol for a specific operation. Full definition
And then I realized, I just needed to make cheesecake bars with a red center dot. (eatthelove.com)
The zero - in windage adjustment dial is easy to tune in small increments, while a lighted center dot helps to improve your accuracy. (geekwrapped.com)
One side is decorated with playful polka dots, and the other side shows off a tropical Monstera leaf print with 3 - Stripes down the center (allsportslex.com)