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.
The risks of consuming king mackerel fish while pregnant far outweigh the benefits, especially when there are a lot of other fish you can eat instead. For those who really like mackerel, there are some other types of mackerel that are okay in moderation, according to the American Pregnancy Association.