A place where oranges are grown; a plantation of orange trees in warm climes or a greenhouse in cooler areas WordNet 3.0 & Open English WordNet

An orangery or orangerie was a room or a dedicated building on the grounds of fashionable residences of Northern Europe from the 17th to the 19th centuries where orange and other fruit trees were protected during the winter, as a very large form of greenhouse or conservatory. Wikipedia

Greenhouse where orange trees were protected during the winter. Wikipedia Disambiguation

Covered winter garden Wikidata

A building used to store citrus trees in winter. OmegaWiki

A garden or plantation where orange trees are grown. Wiktionary