Quotations are a programming technique to embed code inside of code. These embedded code snippets have an execution token but no name token.
Quotations use two new commands
: foo ... [: some words ;] execute ... ;
This code could be written as
:noname some words ; Constant #temp# : foo ... #temp# execute ... ;
Quotations are not (yet) standardized by the forth2012 committee, but they seem to do so in the near future.