Handle moze mat viacero vyznamov, my sme sa bavili o handli z hladiska programovania, resp pristupu roznych prostriedkov k samotnemu programu (procesu).
Vseobecna definicia moze vyzerat napr takto:
A handle is a reference for the operating system. It does not have the semantics of a programming reference but what it does do is allow the system resources to know what you are referring to when it is passed in an API call.

Edit: Pokial by ta ta problematika naozaj zaujimala tu je asi najlepsi clanok od jedneho z najpovolanejsich ludi.
http://blogs.technet.com/b/markrussinovich/archive /2009/09/29/3283844.aspx