Noun

(en noun)

A knot, knob, protuberance or swelling.

(astronomy) The point where the orbit of a planet, as viewed from the Sun, intersects the ecliptic. The ascending and descending nodes refer respectively to the points where the planet moves from S to N and N to S. The respective symbols are .

(botany) A stem node.

(computer networking) A computer or other device attached to a network.

(engineering) The point at which the lines of a funicular machine meet from different angular directions; -- called also knot.

(geometry) The point at which a curve crosses itself, being a double point of the curve. See Crunode, and Acnode.

(graph theory) A vertex or a leaf in a graph of a network, or other element in a data structure.

(medicine) A hard concretion or incrustation which forms upon bones attacked with rheumatism, gout, or syphilis; sometimes also, a swelling in the neighborhood of a joint.

(physics) A point along a standing wave where the wave has minimal amplitude.

(rare) The knot, intrigue, or plot of a piece.

(technical) A hole in the gnomon of a sundial, through which passes the ray of light which marks the hour of the day, the parallels of the Sun's declination, his place in the ecliptic, etc.

The word of interest in a KWIC, surrounded by left and right cotexts.

Noun

(uncountable) The condition of not being threatened, especially physically, psychologically, emotionally, or financially.

* Shakespeare

Give up yourself merely to chance and hazard, / From firm security .

* Jonathan Swift

Some alleged that we should have no security for our trade.

(countable) Something that secures.

An organization or department responsible for providing security by enforcing laws, rules, and regulations as well as maintaining order.

* {{quote-magazine, date=2012-12-14, author=Simon Jenkins, authorlink=Simon Jenkins

, volume=188, issue=2, page=23, date=2012-12-21, magazine=(The Guardian Weekly) , title= We mustn't overreact to North Korea boys' toys , passage=The threat of terrorism to the British lies in the overreaction to it of British governments. Each one in turn clicks up the ratchet of surveillance, intrusion and security . Each one diminishes liberty.}}

* {{quote-magazine, date=2013-06-08, volume=407, issue=8839, page=52, magazine=(The Economist)

, title= The new masters and commanders , passage=From the ground, Colombo’s port does not look like much. Those entering it are greeted by wire fences, walls dating back to colonial times and security posts. For mariners leaving the port after lonely nights on the high seas, the delights of the B52 Night Club and Stallion Pub lie a stumble away.}}

(legal) Something that secures the fulfillment of an obligation or law.

(legal) Freedom from apprehension.

(finance) Proof of ownership of stocks, bonds or other investment instruments.

(finance) Property etc. temporarily relinquished to guarantee repayment of a loan.

A guarantee.

* Macaulay

Those who lent him money lent it on no security but his bare word.

(obsolete) Carelessness; negligence.

* Shakespeare

He means, my lord, that we are too remiss, / Whilst Bolingbroke, through our security , / Grows strong and great in substance and in power.