This is the 2443rd most frequent German word.
riegel
A "riegel" in German refers to a bar (e.g., a metal bar or a snack bar) or a bolt/latch for securing doors.
In this sentence, 'riegel' refers to a chocolate bar, specifically a portion-sized solid piece often wrapped individually.
Ich nehme einen Schokoriegel als Snack.
I take a chocolate bar as a snack.
Here, 'riegel' is used to indicate a mechanical component or bolt that secures a door to prevent it from opening.
Der Dieb konnte die Tür nicht öffnen, weil ein Riegel vorgeschoben war.
The thief couldn't open the door because a bolt was placed against it.
In this case, 'riegel' is used metaphorically, meaning to halt or block an action or procedure, showing versatility in its application.