A broad, heavy leather strop, designed to whet a razor on(noun)
A similar strap, used as a spanking instrument(noun)
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Use "razor strop" in a sentence
"He got that old razor strop down, he said, "If you ever do anything like that again, I'll beat you good.""
"His father was a drunken, superstitious, and sentimental man who delivered milk in the Garden District, made his children kneel on grains of rice for sassing a nun, and whipped Clete with a razor strop when he lost a fight."