Bitter-orange

See under orange (def 2).
a globose, reddish-yellow, bitter or sweet, edible citrus fruit.
any white-flowered, evergreen citrus trees of the genus Citrus, bearing this fruit, as C. aurantium (bitter orange, Seville orange, or sour orange) and C. sinensis (sweet orange) cultivated in warm countries.
any of several other citrus trees, as the trifoliate orange.
any of several trees or fruits resembling an orange.
a color between yellow and red in the spectrum, an effect of light with a wavelength between 590 and 610 nm; reddish yellow.
Art. a secondary color that has been formed by the mixture of red and yellow pigments.
of or relating to the orange.
made or prepared with oranges or orangelike flavoring:
orange sherbet.
of the color orange; reddish-yellow.
Historical Examples

Encyclopaedia Britannica, 11th Edition, Volume 15, Slice 1 Various

noun
another name for Seville orange
noun
any of several citrus trees, esp Citrus sinensis (sweet orange) and the Seville orange, cultivated in warm regions for their round edible fruit See also tangerine (sense 1)

the fruit of any of these trees, having a yellowish-red bitter rind and segmented juicy flesh See also navel orange
(as modifier): orange peel

the hard wood of any of these trees
any of a group of colours, such as that of the skin of an orange, that lie between red and yellow in the visible spectrum in the approximate wavelength range 620–585 nanometres
a dye or pigment producing these colours
orange cloth or clothing: dressed in orange
any of several trees or herbaceous plants that resemble the orange, such as mock orange
adjective
of the colour orange
noun
(ˈɒrɪndʒ). a river in S Africa, rising in NE Lesotho and flowing generally west across the South African plateau to the Atlantic: the longest river in South Africa. Length: 2093 km (1300 miles)
(French) (ɔrɑ̃ʒ). a town in SE France: a small principality in the Middle Ages, the descendants of which formed the House of Orange. Pop: 27 989 (1999) Ancient name Arausio (əˈraʊsɪəʊ)
noun
a princely family of Europe. Its possessions, originally centred in S France, passed in 1544 to the count of Nassau, who became William I of Orange and helped to found the United Provinces of the Netherlands. Since 1815 it has been the name of the reigning house of the Netherlands. It was the ruling house of Great Britain and Ireland under William III and Mary (1689–94) and under William III as sole monarch (1694–1702)
(modifier) of or relating to the Orangemen
(modifier) of or relating to the royal dynasty of Orange
n.