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thoracotomy
thorax
Thorazine
thoria
thorianite
thorite
thorium
thorium dioxide
thorium series
thorn
thorn apple
thornback
thornbill
thorny
thorny devil
thoron
thorough
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thoroughwort
thor·ough·wort [ thúrrō wùrt, thúrrō wàwrt, thúrrə wùrt, thúrrə wàwrt ] (plural thor·ough·worts or thor·ough·wort)


noun 
Definition:
 
U.S. plants 
Same as  boneset
[Late 16th century. <thorough "through," because the plant's stem appears to grow through its leaves]
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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