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.
Oysters and other shellfish should be avoided during pregnancy, unless they are part of a hot meal and have been thoroughly cooked. This is because, when they are raw, these types of seafood might be contaminated with harmful bacteria and viruses that can cause food poisoning.