king orange

This large Florida-grown orange has a rather flattened shape and loose rough skin. It has a juicy, sweetly tart flesh and is in season from December to April. See also orange.

The noun has one meaning:

Meaning #1: large citrus tree having large sweet deep orange fruit that is easily peeled; widely cultivated in Florida
  Synonyms: temple orange, temple orange tree, tangor, Citrus nobilis