Dictionary.net

• a port city on the Gulf of Riga that is the capital and largest city of Latvia; formerly a member of the Hanseatic League

2006 - WordNet 3.0
By Princeton University

• A Russian Baltic port (R. deal, hemp, &c.; R. balsam, essential oil distilled from kind of pine& used medicinally).

1919 - The concise Oxford dictionary of current English
By Sir Augustus Henry