Previous definitions:
1.
A citrus fruit that is orange in color, and larger than lemons but smaller than grapefruits in size. There are different types of oranges - sweet oranges (e.g. navel orange, valencia orange, blood orange), mandarin oranges (e.g. satsuma, tangerine, clementine), and bitter oranges (e.g. seville orange, bergamot).
As defined by Mechanical Turk
on November 08, 2011