citrous fruit, citrus, citrus fruit - any of numerous fruits of the genus Citrus having thick rind and juicy pulp; grown in warm regions

citron tree, Citrus medica, citron - 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