To augment GrandFather's most excellent summary, perhaps you can put yourself into perl's headspace for a moment.

The programmer has given you the following command:

print

"Ah," says you, mighty Perl interpreter and compiler that you are, "the programmer wants me to display some output. Let's see what is to be displayed."

Scanning excitedly into the next parsable text on the line, you see the following:

$fh{'something'}

"Ah," says you, practical extractor and reporter that you are, "the programmer wants me to display an element in a hash. Let's go get that value."

And then you pass out when what you get is a FILE HANDLE, of all things. As the lights fade and dim, you are heard to mutter something which sounds an awful lot like "Nooooo disasssemble Number Five . . . "