A wheelwright is  a craftsman who builds or repairs wooden wheels. The word is the combination of wheel and the archaic word wright, which comes from the Old English word wryhta, meaning a worker or maker.
It is advisable not to eat mercury-rich fish such as these during pregnancy.. Look out for fish that taste especially metallic, a sign of high mercury levels. Medium-mercury fish include Chilean sea bass, grouper, cod, Mahi Mahi, monkfish, and snapper. Low-mercury fish are the safest for pregnant women.
Eating raw or undercooked fish or shellfish could result in an illness severe enough to cause a blood infection that could be life-threatening for you and your baby. Raw fish that has been frozen is not safe during pregnancy, either. While freezing can destroy potentially harmful parasites, it does not kill pathogens. Stick with sushi made only with vegetables or cooked fish. Find out how to avoid mercury while eating fish during pregnancy.