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Definition of Rattleback
1. Noun. A form of top (toy) that will spin preferentially in one direction (rattling, then reversing, if spun in the other direction) ¹
¹ Source: wiktionary.com
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1. Noun. A form of top (toy) that will spin preferentially in one direction (rattling, then reversing, if spun in the other direction) ¹
¹ Source: wiktionary.com