Tamĕsis
or
Tamĕsa. Now the Thames; a river in Britain, on which
stood Londinium, flowing into the sea on the eastern coast. Caesar crossed the Thames at the
distance of eighty-six Roman miles from the sea, probably at Cowey Stakes, near Oatlands and
the confluence of the Wey (
B. G. v. 11;
Tac.
Ann. xiv. 32).