[n] any of numerous fruits of the genus Citrus having thick rind and juicy pulp; grown in warm regions
[n] 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
[adj] of or relating to or producing fruit of the plants of the genus Citrus; "the citrus production of Florida"
[adj] of or relating to plants of the genus Citrus; "a citrous disease"