noun. a small evergreen tree that originated in Asia but is widely cultivated for its fruit.
noun. ['ˈsɪtrəs'] any of numerous fruits of the genus Citrus having thick rind and juicy pulp; grown in warm regions.
noun. ['ˈsɪtrəs'] 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.