Tenchthēri

ōrum, m.
I. a German people on the Rhine, in the neighborhood of the modern Cleves, Essen, and Bergen, Caes. B. G. 4, 1; 4, 4; 4, 16; Tac. G. 32; id. A. 13, 56; id. H. 4, 21.
Lewis & Short
A Latin Dictionary, 1879
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