/ ˈæsprɪn; NAmE ; ˈæspərɪn/ noun
[ U , C ] ( pl. as·pirin or as·pir·ins ) a drug used to reduce pain, fever and inflammation :
Do you have any aspirin?
Take two aspirin(s) for a headache.
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WORD ORIGIN
late 19th cent.: from German , from acetylierte Spirsäure acetylated salicylic acid (the element Spir- being from the plant genus name Spiraea ).