Usage Celtic Mythology
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Contributor Contrib.pinkmoon_lj on 10/16/2008
Probably means "great provider" from Gaulish ro, an intensive prefix (hence "very, most, great"), combined with smert "purveyor, carer" and the feminine name suffix a. This was the name of an obscure Gallo-Roman goddess of fertility, abundance and prosperity. The author J. K. Rowling borrowed the name for a witch in her 'Harry Potter' series.