sprue

1 [sproo]
noun
1.
Metallurgy.
a.
an opening through which molten metal is poured into a mold.
b.
the waste metal left in this opening after casting.
2.
Metalworking. a channel in a forging die permitting the die to clear that part of the rough piece not being forged.
verb (used with object), sprued, spruing.
3.
to cut the sprues from (a casting).

Origin:
1820–30; origin uncertain

Dictionary.com Unabridged

sprue

2 [sproo]
noun Pathology.
a chronic disease, occurring chiefly in the tropics, resulting from malabsorption of nutrients from the small intestine and characterized by diarrhea, ulceration of the mucous membrane of the digestive tract, and a smooth, shining tongue; psilosis.

Origin:
1815–25; < Dutch spruw; cognate with Middle Low German sprūwe tumor

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
sprue1 (spruː)
 
n
1.  a vertical channel in a mould through which plastic or molten metal is introduced or out of which it flows when the mould is filled
2.  plastic or metal that solidifies in a sprue
 
[C19: of unknown origin]

sprue2 (spruː)
 
n
a chronic disease, esp of tropical climates, characterized by flatulence, diarrhoea, frothy foul-smelling stools, and emaciation
 
[C19: from Dutch spruw; related to Middle Low German sprüwe tumour]

sprue3 (spruː)
 
n
dialect (East London) an inferior type of asparagus
 
[C19: of unknown origin]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

sprue (sprōō)
n.

  1. A chronic disease that is characterized by diarrhea, steatorrhea, emaciation, and anemia, caused by defective absorption of nutrients from the intestinal tract.

  2. Wax or metal used to form the pathway for forcing molten metal into a mold in the making of a dental casting.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Tropical sprue is a condition seen in residents of, or visitors to, tropical areas.
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