I know what a side dish is, but I can't figure out its figurative meaning. Can you please give a definition to it.
The daily Beast started as an aggregator with some original reporting as a side dish.
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Sign up to join this communityA side dish accompanies the main part of a meal, making it complete. But the primary focus is not on the side dish.
The figurative meaning is the same - something that is a part of the whole package, but of lesser importance.
Another frequently used metaphor would be a supporting actor.
A side dish can also be a person you're seeing intimately outside of your primary monogamous romantic relationship.
I'm having a hard time finding this definition anywhere other than Urban Dictionary at the moment.