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.
Foods to avoid during pregnancy include: Fish with lots of mercury such as swordfish, tilefish, and shark. Cut back on tuna and snapper to no more than one serving a week. But you can eat up to two servings of fish such as salmon, catfish, mahi mahi, and cod, along with shellfish like shrimp, crab, and scallops.