/ ˈreɪzə(r); NAmE / noun
an instrument that is used for shaving :
an electric razor
a cut-throat / safety / disposable razor
—compare shaver
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IDIOMS
- be on the razor's edge | be on a razor edge
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WORD ORIGIN
Middle English : from Old French rasor , from raser shave closely, from Latin ras- scraped, from the verb radere .