What is Google Sandbox ?

[MaryGreen]

In simple terms, the Google Sandbox is viewed by many as a probationary period forced upon new websites that prevents them from shooting to the top of search engine results. In more complex terms, Google's Sandbox is believed to consist of a filter program placed on its search engine that impacts only new websites that its bots crawl.The Sandbox is all part of Google's effort to clean up its search results and provide visitors with results that offer the greatest value.

[Kate Evans]

The Google Sandbox is defined as a time period, which a new website needs to wait, in order to get ranking for keywords. In other words, it can be defined as a filter system that Google places on every new web pages.

[a4nuser]

The sandbox effect, aging delay. Definition: The Google sandbox refers to a commonly held belief that Google has a filter that places all new websites under restrictions for a certain amount of time to prevent them from ranking in searches.

[SEO.Ninja]

Google Sandbox is an imaginary area where new and less authoritative sites are kept for a specific time period until they establish themselves of being display on the search results.
its generally happen due to building high volume of links in short time.

[dhcuaeweb]

It is a filter for new websites so even a website with quality content, great user experience won't rank well for the targeted keywords. After sometimes the website will start ranking once the sandbox mod is ended