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Robertson screwdriver
/ɹˈɒbətsən skɹˈuːdɹaɪvə/
/ɹˈɑːbɚtsən skɹˈuːdɹaɪvɚ/
Robertson screwdriver
01
a tool with a square-shaped tip used for turning screws with a square-drive head
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a tool with a square-shaped tip used for turning screws with a square-drive head