pomelo

noun

1. The large fruit of the Citrus maxima (syn. C. grandis), native to South Asia and Southeast Asia, with a thick green or yellow rind, a thick white pith, and semi-sweet translucent pale flesh.
2. The tree which produces this fruit.
3. (Caribbean, US, archaic)The grapefruit.

   “SHADDOCK, AND POMELO, OR GRAPE-FRUIT. (Citrus aurantium decumana.*) The cultivation of these fruits is extendiug gradually, especially of the pomelo, which is a first-class marketable fruit, very valuable in the spring and early summer.”

   “Pomelo.* — Much larger than an orange and smaller than a shaddock; a delicious fruit, preferred by many to the orange. Skin smooth, pale yellow; subacid. The membrane dividing the pulp is bitter, and must be removed before eating the pulp. Also called "grape-fruit" from its habit of growing in clusters.”

   “POMELO (syn. grape fruit).—A variety of shaddock; fruit very large, from two to five pounds each, pale yellow, resembling the citron; skin smooth; pulp sub-acid. / SHADDOCK.—Tree inclined to be dwarf; fruit very large, with smooth skin, pale yellow and very glossy; the rind is very thick and spongy, and very bitter; ornamental only”

   “The pomelo has unfortunately been marketed under the name “grape-fruit,” and it is doubtful whether the correct name, pomelo, will ever displace the trade name.”