5.9.5 Colon Definitions

     : name ( ... -- ... )
         word1 word2 word3 ;

Creates a word called name that, upon execution, executes word1 word2 word3. name is a (colon) definition.

The explanation above is somewhat superficial. For simple examples of colon definitions see Your first definition. For an in-depth discussion of some of the issues involved, See Interpretation and Compilation Semantics.

:       "name" – colon-sys         core       “colon”

;       compilation colon-sys – ; run-time nest-sys         core       “semicolon”