Nectar is a sugar-rich liquid produced by plants. It is produced either by the flowers, in which it attracts pollinating animals, or by extrafloral nectaries, which provide a nutrient source to animal mutualists providing anti-herbivore protection. It is produced in glands called nectaries.
Nectar is an economically important item, the sugar source for honey. It is also useful in agriculture and horticulture because the adult stages of many predatory insects, as well as hummingbirds and butterflies, feed on nectar.
Nectar is derived from Latin nectar "drink of the gods", which in turn has its origins in the Greek word νέκταρ (néktar), presumed to be a compound of the elements nek- "death" and -tar "overcoming". The earliest recorded use of its current meaning, "sweet liquid in flowers", is 1609.
Source : http://en.wikipedia.org/wiki/Nectar
See Also : Flowers, Florist, Florists