Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. A watercourse that feeds water into a mill, water wheel, or turbine.
Century Dictionary and Cyclopedia
- n. The race or flume which leads water to a water-wheel.
- n. See the extract.
Wiktionary
GNU Webster's 1913
- n. See race, a water course.
WordNet 3.0
- n. a waterway that feeds water to a mill or water wheel or turbine
Examples
“In the configuration finally adopted, water to be pumped is taken from the headrace canal with a separate sedimentation arrangement in the forebay so that there are still fewer suspended particles as compared to water supplied to the turbine.”
“During the early part of the flood the timber dam of the Ludlum Steel and Iron Company, which raised the water to a height of 27 feet, and afforded 7.04 horsepower per foot fall, was carried away with a part of the headrace.”
“Other improvements that will be started in the coming year include repairing and restoring the mill's headrace, which guides and controls water flow from the river to the mill, masonry repairs to the foundation walls, repainting the cupolas of the Slater and Wilkinson mills and replacing the Slater Mill's 1929 fire suppression system.”
Lists
These user-created lists contain the word ‘headrace’.
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Dam
List of words pertaining to dams and other means of impounding and directing water; their names, parts, pieces, passageways.
gage-weir, rafter-dam, bear-trap dam, tripsill, splash-dam, flood-dam, flooding-dam, sluiceway, spillway, millrace, headrace, sluice-valve and 38 more...
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See extract
Being a list of words which have the phrase "see extract" in their definitions. You might also find a few which have "see extract under" or "see the extract."
glove-sheep, clang, bookmaker, lackadaisical, apprehend, interfluvial, fortunate, intersect, cannelon, adoration, canter, headrace and 10 more...
Tweets
Looking for tweets for headrace.

ruzuzu Thanks, hernesheir. I've added it to my see-extract list. Mar 1, 2012
hernesheir See the extract.
So we are instructed in the definitions given. Jan 12, 2012