What is the meaning of Google?

Google was first called BackRub. Due to the name not being good enough, one of the co-founders of Google Larry Page conducted some workshops to find the perfect name for a search engine along with his colleagues back at StanfordSean Anderson, a graduate student at Stanford coined the term 'Google' inspired by the mathematical term Googolplex
A Googolplex is the number 10 to the power googol, or equivalently, 10 to the power 10100. In other words, it is a 1 followed by a googol zeroes.
Larry Page found the name interesting, but decided to make it even shorter by making it a Googol. A Googol means the digit 1 followed by 100 zeroes.

1 Googol = 1.0 x 10¹⁰⁰

therefore,

1 Googol = 10,000,000,000,000,000,000,000,000,000,000, 000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000. 

However, while searching for the domain name 'google.com', Sean Anderson accidentally searched for 'google.com' which Larry Page liked found it better than the actual term 'googol'. 
google logo history