NAG


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NAG

Abbreviation for N-acetylglutamate.

NAG

Abbreviation for:
N-acetylglucosamine
National Advisory Groups 
narrow-angle glaucoma
neutral alpha-glucosidase

nag

vernacular for horse; called also steed, cayuse, neddy.
References in classic literature ?
There were three nags and two mares, not eating, but some of them sitting down upon their hams, which I very much wondered at; but wondered more to see the rest employed in domestic business; these seemed but ordinary cattle.
One of our babies fell out of the nest yesterday and Nag ate him.
Kala Nag had no tusks; the chain was the badge of his authority; but for all that, he swung wide of Moti Guj at the last minute, and tried to appear as if he had brought the chain out for amusement.
When the horseman came up, he proved to be a student, a merry fellow, who was journeying along on his nag, and singing as he went.
So, after having paid their score, the messenger, with the Tinker striding beside his nag, started back to Nottingham again.
Tushin gave no orders, and, silently- fearing to speak because at every word he felt ready to weep without knowing why- rode behind on his artillery nag.
Our husbands would really forget our existence if we didn't nag at them from time to time, just to remind them that we have a perfect legal right to do so.
I saw you on Saturday cantering over the hill on a nag not worthy of you.
You'd better make one not to nag people everlastingly," retorted Dan.
His parting words concluded, John Browdie strode heavily out, remounted his nag, put him once more into a smart canter, and, carolling lustily forth some fragments of an old song, to which the horse's hoofs rang a merry accompaniment, sped back to his pretty wife and to Nicholas.
A stray Brown from some distant county dropped in every now and then; or from Oxford, on grave nag, an old don, contemporary of the Squire; and were looked upon by the Brown household and the villagers with the same sort of feeling with which we now regard a man who has crossed the Rocky Mountains, or launched a boat on the Great Lake in Central Africa.
A wretched Russian nag they'll ruin, but keep good dray-horses--they won't ruin them.