n. 1. A citrus tree (Citrus paradisi) bearing large round edible fruit having a thick yellow rind and juicy somewhat acid pulp. [ wns=1 ] Syn. -- Citrus paradisi. [ WordNet 1.5 ]
2. The large yellow fruit of the Citrus paradisi, having somewhat acid juicy pulp. It is a popular breakfast food. [ wns=2 ] [ WordNet 1.5 +PJC ]