Sharp metal blades used for shaving or cutting, or plural form referring to multiple such tools.
From Old French 'raser' meaning 'to scrape or scratch,' derived from Latin 'radere' meaning 'to scrape.' The word has referred to sharp cutting tools for over 500 years.
Ancient humans used obsidian (volcanic glass) for razors, which can actually be sharper than modern surgical steel—archaeologists have found obsidian blades that are thinner and sharper than anything we can make today!
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