A person who fights doggedly, who exhibits indomitable will.(noun)
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Use "scrapper" in a sentence
"Gunrunner, blackbirder, smuggler, pirate, pearler, or what have you, but always a scrapper from the word go, with a constant hankering to bounce his enormous fists offa somebody's conk."
"Al was a battler and a brawler and a scrapper from the day he first stepped in as a"
"Al was a battler and a brawler and a scrapper from the day he first stepped in as a Green"