shamrock

noun
🔊/ˈʃæmrɒk/
🔊/ˈʃæmrɑːk/
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  1. a small plant with three leaves on each stem. The shamrock is the national symbol of Ireland.三叶草(爱尔兰的国花)Topics Plants and treesc2
    Word Originlate 16th cent.: from Irish seamróg ‘trefoil’ (diminutive of seamar ‘clover’).