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.
If you enjoy raw oysters, mussels and other shellfish, you'll need to stop eating these during pregnancy. Raw shellfish may be contaminated with harmful bacteria and viruses that can cause food poisoning. You're more susceptible to food poisoning during pregnancy.