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|Noun||1.||citron tree - thorny evergreen small tree or shrub of India widely cultivated for its large lemonlike fruits that have thick warty rind|
citron - large lemonlike fruit with thick aromatic rind; usually preserved
citrus tree, citrus - any of numerous tropical usually thorny evergreen trees of the genus Citrus having leathery evergreen leaves and widely cultivated for their juicy edible fruits having leathery aromatic rinds
citronwood - wood of a citron tree