Meanings
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1
noun
a utensil or machine used to crush food or another material into a soft mass
She used a potato masher to break the cooked vegetables into a smooth mixture.
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2
noun
dated slang: a fashionable man who aggressively flirts with or makes unwelcome advances to women
The novel mocks the idle mashers who crowded the bars and music halls.
Thesaurus
Etymology
The tool sense is transparently mash + -er. The dated social sense arose in late nineteenth-century slang alongside mash, 'an infatuation or flirtation'; it denoted a would-be ladies' man, often one who accosted unfamiliar women. That historical sense fits Wells's list of bar loafers and mashers.