• WordNet 3.6
    • n horsehead any of several silvery marine fishes with very flat bodies
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Webster's Revised Unabridged Dictionary
    • n Horsehead (Zoöl) The silver moonfish (Selene vomer).
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Century Dictionary and Cyclopedia
    • n horsehead A fish of the genus Selene or the genus γomer; a moonfish or dollar-fish, as Selene vomer or Vomer setipinnis. See cut in next column.
    • n horsehead A fish of the family Hippocampidæ; a sea-horse.
    • n horsehead A cast of the interior of the shell of a fossil species of Trigoniidæ.
    • n horsehead The surf-scoter, a duck, Œdemia perspicillata, more fully called horsehead coot.
    • n horsehead In machinery, a lever, so named because of its shape, used on a Heilmann cotton-combing machine as part of the detaching mechanism.
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In literature:

He stayed with me while I was crazy and got me safe to Horsehead.
"Laramie Holds the Range" by Frank H. Spearman
It was a medium ship of five thousand tons burden, designed for service in the Horsehead Nebula region.
"The Pirates of Ersatz" by Murray Leinster
Glines, Miss Julia B., Horsehead.
"The American Missionary - Volume 52, No. 1, March, 1898" by Various
They had a son named Thord Horsehead.
"The Pre-Columbian Discovery of America by the Northmen" by B. F. De Costa

In news:

Parade delivers St Nick to Horseheads.
Shirtless Jogger in Horsehead Mask Photobombs Hurricane Sandy TV News.
Alt-country rock band Horsehead has been a fixture on the local Richmond music scene, but it was the band's 2010 full-length, "Before the Bright Lights," that won it a big following.
Horsehead Corporation announced that it plans to build its new, state-of-the-art zinc and diversified metals production facility in Rutherford County, N.C. Near the municipality of Forest City.
After winning two straight games, Horseheads football took a tough loss to Johnson City on the road WENY-TV Sports gives you the highlights from the Saturday game of the week.
Dan Carlson, Shell's General Manager of New Business Development, said Thursday that the company signed a land option agreement with Horsehead Corp.
09 November 2012 Horseheads State Police arrested Danny L Ross, 56, of Elmira for Petit Larceny following a shoplifting complaint from Wal-mart on November 8th.
The Seneca County Sheriff's Office reports, Deputies responded to the Horseheads Police Department and placed Rebecca L Rice, age 29, of 4750 ST HY 89, Romulus , NY in to custody.
Bertha Zyla Romat, 99, of Horseheads, passed away at Hubbard Hospice House in Charleston, West Virginia on Thanksgiving Day, November 22, 2012.
Horseheads' homes affected by truck traffic.
Horseheads grad Dom Sylvester, a sophomore center on the UAB Blazers football team, will travel to face the Buckeyes, Horseheads football looks to win again, and the Corning Hawks are set for Binghamton.
M-E, BHS and Horseheads Net Hoops Wins.
Maine-Endwell, Binghamton and Horseheads all recorded girl's basketball wins Tuesday night.
From Rosie Soul to Horsehead, here's what Richmond's bands are working on.
Our Saviour's Lutheran Church will be hosting "Prayer for Troops" at 6 pm on Dec 5 at the church, 2872 Westinghouse Road, Horseheads.

In science:

We present high angular resolution images of the H2 1-0 S(1) line emission obtained with the Son of ISAAC (SOFI) at the New Technology Telescope (NTT) of the Horsehead nebula.
Density structure of the Horsehead nebula photo-dissociation region
Fig. 1. (a) Map of the Horsehead nebula in Hα line emission obtained at the 0.9 m KPNO telescope (by Bo Reipurth and J.
Density structure of the Horsehead nebula photo-dissociation region
Horsehead nebula is delineated by a bright and narrow filament (see Fig. 1b).
Density structure of the Horsehead nebula photo-dissociation region
However, we have run models with Rf = 5 × R0 f and find that for the conditions prevailing in the Horsehead nebula the chemical and thermal structure is practically not affected.
Density structure of the Horsehead nebula photo-dissociation region
Apparently, the condition is not met in the Horsehead nebula, since the observed layered structure shows that the H2 offset from the ionization front (see Fig. 3).
Density structure of the Horsehead nebula photo-dissociation region