A fine or high-quality spinning top, or a top made with superior materials for balanced rotation.
Compound of 'fine' (excellent quality, from Old English) and 'top' (a spinning toy, from Old English 'top'). This term appears in children's literature and toy-making terminology from the 18th-19th centuries.
In the 1800s, before electronic toys existed, a finetop was a status symbol for wealthy children—the weight distribution and balance of a high-quality top determined how long it could spin, much like how expensive toys today are judged by performance metrics.
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