• WordNet 3.6
    • adj loco informal or slang terms for mentally irregular "it used to drive my husband balmy"
    • ***
Webster's Revised Unabridged Dictionary
  • Interesting fact: In 1962, the Mashed Potato, the Loco-Motion, the Frug, the Monkey, and the Funky Chicken were popular dances.
    • adv Loco (Mus) A direction in written or printed music to return to the proper pitch after having played an octave higher.
    • n Loco A locomotive.
    • Loco (Bot) A plant (Astragalus Hornii) growing in the Southwestern United States, which is said to poison horses and cattle, first making them insane. The name is also given vaguely to several other species of the same genus. Called also loco weed.
    • Loco (Bot) Any one of various leguminous plants or weeds besides Astragalus, whose herbage is poisonous to cattle, as Spiesia Lambertii, syn. Oxytropis Lambertii.
    • v. t Loco To poison with loco; to affect with the loco disease; hence (Colloq.), to render insane or mad. "The locoed novelist."
    • ***
Century Dictionary and Cyclopedia
    • n loco Same as loco-weed.
    • n loco A disease of animals resulting from eating loco-weeds. The brain of the animal is affected; it commonly loses both flesh and strength, and death ensues, though not necessarily soon. See loco-weed.
    • loco To poison with the loco-weed or crazy-weed.
    • loco Derived from loco-weed.
    • loco Hence To make crazy or in any way eccentric: as, he's plumb locoed.
    • n loco An abbreviated form of locomotive.
    • ***


Webster's Revised Unabridged Dictionary
Sp. loco, insane


In literature:

But some o' them is showin' signs o' loco, an' thar ain't no loco weed on this range.
"Ted Strong in Montana" by Edward C. Taylor
Engineer and Loco Superintendent: MR. G. C. MCDONALD.
"The Story of the Cambrian" by C. P. Gasquoine
The loco-weed (yerba-loco) was common in our country and ruined many of our horses, but more about it hereafter.
"Ranching, Sport and Travel" by Thomas Carson
I reckon I've been half locoed.
"Hidden Gold" by Wilder Anthony
Those locos were worth to us more than a king's ransom!
"With the Guards' Brigade from Bloemfontein to Koomati Poort and Back" by Edward P. Lowry
You ask me, the whole thing's plumb loco, to say nothing of psychotic.
"This Crowded Earth" by Robert Bloch
I'm sure gettin' locoed.
"'Drag' Harlan" by Charles Alden Seltzer
He meant, of course, that Peter was a little locoed.
"The Prairie Mother" by Arthur Stringer
It was her popping up now here and now there like a ghost that locoed me.
"The Forester's Daughter" by Hamlin Garland
I think the cattle get poisoned by eating some weed, same as lots of 'em get locoed.
"The Boy Ranchers in Camp" by Willard F. Baker

In poetry:

I followed those tracks till I got stiff and sore,
But he stayed right in front where he kept makin' more.
Then I got so I felt like a tired, locoed sheep
A-trailin' that fuzztail and a-losin' my sleep.
"The Ridge-Running Roan" by Curley Fletcher
Again, as she grows something stronger,
And master's feet are swath'd no longer,
If in the night too oft he kicks,
Or shows his loco-motive tricks,
These first assaults fat Kate repays him,
When halt-asleep she overlays him.
"Alma; or, The Progress of the Mind. In Three Cantos. - Canto I." by Matthew Prior

In news:

Chow Go Loco for Local Day.
Camacho too loco to ever forget.
Asked Saturday how he wished for his son to be remembered, Camacho's father, also named Hector, said, "As he always was, loco .".
How else could we remember Hector Camacho than loco .
Much too loco to ever forget.
Zetas leader 'El Loco ' arrested for 49 bodies found in Nuevo Leon.
The competition has stepped up its game when it comes to facilities, said Mark Hardison, El Pollo Loco 's vice president of marketing.
All Politics is Loco (Part 1).
The first time Carlos Mann mixed a batch of his own chocolate, he knew he was loco over cocoa.
'El Loco ' Barrera: What does the capture of Colombia's last big drug lord mean.
Bob Archibald explains the political term " Loco Foco" and its local history.
Political cartoon celebrating the defeat of " Loco Foco" Created by: David Claypool Johnston, 1840 Source: Library of Congress, American Cartoon Prints.
Jalapeno Loco at Tulsa gun range.
Venezuela nabs Colombian kingpin ' Loco ' Barrera.
El Loco 's management, staff and menu will remain the same.

In science:

In this test the vertical emittance correction was compared to the standard method using LOCO.
Status of the Super-B factory Design