Tamesis

Tamesis was the ancient name for the River Thames. There may have been an eponymous goddess of the same name.Sculptures entitled Tamesis and Isis by Anne Seymour Damer can be found on the bridge at Henley-on-Thames, Oxfordshire. The original terracotta and plaster models were exhibited at the Royal Academy, London, in 1785. They are now on show at the River and Rowing Museum in Henley.
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n. Thames, river in southern England

[Celtic] The Celtic goddess of fresh waters. Her name survives in the English River Thames and in Tamise, a French name for the Schelde (Scheldt).

= Thames, the.
Ex: The author examines Whistler's visits to the more squalid sections of the city, his views along the Thames and his portrayals of street urchins.