A trademark for: a container for a pharmaceutical adapted for inhalation by means of a nebulizer or atomizer; such a container and its contents; the contents themselves.
Late Middle English (in an earlier sense).
A moulding of a wavy or serpentine form.
Early 19th century; earliest use found in Peter Nicholson (1765–1844), architectural writer and mathematician. Apparently from French nébulé nebuly; however, compare French nébules (plural) architectural moulding of a wavy form.