Salal-berry n. : The edible fruit of the Gaultheria Shallon, an ericaceous shrub found from California northwards. The berries are about the size of a common grape and of a dark purple color.

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Taxonomy
Salal, Gaultheria shallon, plant, unranked, free encyclopedia, the leaves, heathland, berries, Medicinal properties, flavor, vegetation, herb, the Pacific Northwest, USDA Plant, Ecology, bladder inflammation, Edible and Useful Plants of California, Plant Profile.

Defination from the web:
Salal berries were a significant food resource for native people, who both ate them fresh and dried them into cakes. ... In the Pacific Northwest, the harvesting of salal is the heart of a large export of cut evergreens in which it is sold worldwide for use in floral arrangements. ...