Toughie
[ˈtʌfi]Background Story
The sources checked record Toughie and Toughy only as the names of a frog, a roller derby skater, and three fictional characters. They do not record it as a personal name with a meaning of its own.

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The English word meaning powerful or strong
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English word for a rock made of volcanic ash
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BläCky
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A rare modern American given name, a variant spelling of havoc
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English word for an elongated flying vehicle propelled by a rocket engine