pom·e·lo 
(pŏmə-lō′) also pum·me·lo or pum·e·lo (pŭm-)
(pŏmə-lō′) also pum·me·lo or pum·e·lo (pŭm-)n. pl. pom·e·los also pum·me·los or pum·e·los
1. A tropical Southeast Asian tree (Citrus maxima) closely related to the grapefruit and having very large round fruit with a thick rind and coarse-grained pulp.
2. The edible yellow fruit of this tree. In both senses also called shaddock.
[Probably alteration of POMPELMOUS.]