snort

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A rough, noisy sound made by breathing forcefully through the nostrils, as a horse or pig does.
• noun A similar sound.
• noun A drink of liquor, especially when swallowed in one gulp.
• noun Cocaine or heroin, especially a small amount sniffed at one time.
• noun The liquor or drug so taken.
• intransitive verb To breathe noisily and forcefully through the nostrils.
• intransitive verb To make a sound resembling noisy exhalation.
• intransitive verb To make an abrupt noise expressive of scorn, ridicule, or contempt.
• intransitive verb To ingest a drug, such as cocaine or heroin, by sniffing.
• intransitive verb To express by snorting.
• intransitive verb To ingest by sniffing.

from The Century Dictionary.

• noun A loud abrupt sound produced by forcing air through the nostrils.
• To snore loudly.
• To force the air with violence through the nose, so as to make a noise: said of persons under excitement, and especially of high-spirited horses.
• To laugh outright or boisterously; burst into a horse-laugh.
• To turn up: said of the nose.
• To express by a snort; say with a snort: as, to snort defiance.
• To expel or force out as by a snort.

from the GNU version of the Collaborative International Dictionary of English.

• intransitive verb To force the air with violence through the nose, so as to make a noise, as do high-spirited horsed in prancing and play.
• intransitive verb rare To snore.
• intransitive verb colloq. To laugh out loudly.
• noun The act of snorting; the sound produced in snorting.
• transitive verb To expel throught the nostrils with a snort; to utter with a snort.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The sound made by exhaling or inhaling roughly through the nose.
• noun slang A dose of a drug to be snorted. Here, "drug" includes snuff (i.e., pulverized tobacco). A snort also may be a drink of whiskey, as "Let's have a snort".
• verb intransitive To make a snort; to exhale roughly through the nose.
• verb transitive (slang) To inhale (usually a drug) through the nose.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a cry or noise made to express displeasure or contempt
• verb make a snorting sound by exhaling hard
• verb inhale recreational drugs
• verb inhale through the nose
• verb indicate contempt by breathing noisily and forcefully through the nose
• noun a disrespectful laugh