a tree of a genus that includes citron, lemon, lime, orange, and grapefruit. Native to Asia, citrus trees are widely cultivated in warm countries for their fruit, which has juicy flesh and pulpy rind 柑橘属植物
Genus Citrus, family Rutaceae 柑橘属,芸香科 ■(亦作 citrus fruit)a fruit from such a tree 枸橼;柠檬;柑子;橘子;柚子(果实)