Sandbox

A sandbox is a filter used by Google that is believed to prevent new websites from ranking highly on search engine results pages (SERPs). Because Google ultimately strives to prioritize relevant, high-quality content, it believes that sandboxing helps the search engine filter out new or brand-new sites from more extensive and well-run sites. Google's goal is to be a reliable and useful search engine that helps people quickly find what they're looking for. Therefore, relevance is critical to Google's success as a search engine, making tools like Sandbox highly desirable. The sandbox helps Google separate the wheat from the chaff and determine which websites should appear first in search results. In fact, few people know for sure if the Google Sandbox really exists, but this filter was probably added to Google's algorithms in March 2004.

Meanings of Sandbox

playground consisting of a sandbox.
Sand-filled box in the form of a metal mould.
Container with sand or pumice stone, previously used for the tissue paper.
Pet bath.
The locomotives have a box from which sand is poured onto the rails in front of the driving wheels to prevent slipping.
An isolated area in which a program can operate with limited resources.
(Wiktionary Jargon and WMF) A page on a wiki where users can experiment freely without destroying or damaging legitimate content.
(usually Sandbox) Middle East.
Limit (a program, etc.) by isolating it.