A full body cast that is worn for a lifetime. Used in the event of a terrible accident or the lack thereof a skeletal structure.
Our uncle was in a clast after the motorcycle accident. Thanks to the clast, he lived a productive life.
by Sandy December 20, 2004
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Yo dude, did you hear that Jessica is dating Eric now?

Woah dude, that’s pretty clast.
by danger19 June 30, 2023
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