over- + tax
overtax (third-person singular simple present overtaxes, present participle overtaxing, simple past and past participle overtaxed)
- To tax to an excessive degree
- To overburden
The overtaxed shaft snapped.
1963 January, “New in Japan: Tokaido line trials”, in Modern Railways, page 44: The 310-mile Tokaido line is being built from Tokyo to Osaka, through the most densely populated and heavily industrialised area of the country, to relieve the existing 340-mile 3ft 6in gauge line, which is overtaxed by continually increasing traffic.