Noun

(en noun)

A tool for finding whether a surface is , or for creating a horizontal or vertical line of reference.

A distance relative to a given reference elevation.

Degree or amount.

* , chapter=17

, title= The Mirror and the Lamp , passage=This time was most dreadful for Lilian. Thrown on her own resources and almost penniless, she maintained herself and paid the rent of a wretched room near the hospital by working as a charwoman, sempstress, anything. In a moment she had dropped to the level of a casual labourer.}}

* {{quote-magazine, date=2013-05-17, author=George Monbiot, authorlink=George Monbiot

, title=Money just makes the rich suffer, volume=188, issue=23, page=19, magazine=(The Guardian Weekly) citation , passage=In order to grant the rich these pleasures, the social contract is reconfigured. […]  The public realm is privatised, the regulations restraining the ultra–wealthy and the companies they control are abandoned, and Edwardian levels of inequality are almost fetishised.}}

(computer science) Distance from the root node of a tree structure.

(gaming) One of several discrete segments of a game generally increasing in difficulty. Often numbered. Often, each level occupies different physical space (levels don't require any direct physical relationship to each other, e.g. vertically stacked, horizontally chained, etc).

(gaming) A numeric value that quantifies a character's experience and power.

A floor of a multi-storey building.

(British) an area of almost perfectly flat land.

Noun

(en-noun)

(obsolete) Acknowledgement.

The fact of knowing about something; general understanding or familiarity with a subject, place, situation etc.

* {{quote-magazine, date=2013-08-03, volume=408, issue=8847, magazine=(The Economist)

, title= The machine of a new soul , passage=The yawning gap in neuroscientists’ understanding of their topic is in the intermediate scale of the brain’s anatomy. Science has a passable knowledge of how individual nerve cells, known as neurons, work. It also knows which visible lobes and ganglia of the brain do what. But how the neurons are organised in these lobes and ganglia remains obscure.}}

Awareness of a particular fact or situation; a state of having been informed or made aware of something.

* 1813 , (Jane Austen), (Pride and Prejudice) :

He had always intended to visit him, though to the last always assuring his wife that he should not go; and till the evening after the visit was paid she had no knowledge of it.

Intellectual understanding; the state of appreciating truth or information.

Familiarity or understanding of a particular skill, branch of learning etc.

* 1573 , George Gascoigne, "The Adventures of Master F.J.", An Anthology of Elizabethan Prose Fiction :

Every time that he had knowledge of her he would leave, either in the bed, or in her cushion-cloth, or by her looking-glass, or in some place where she must needs find it, a piece of money.

(obsolete) Information or intelligence about something; notice.

* 1580 , Edward Hayes, "Sir Humphrey Gilbert's Voyage to Newfoundland", Voyages and Travels Ancient and Modern , ed. Charles W Eliot, Cosimo 2005, p. 280:

Item, if any ship be in danger, every man to bear towards her, answering her with one light for a short time, and so to put it out again; thereby to give knowledge that they have seen her token.

The total of what is known; all information and products of learning.

(countable) Something that can be known; a branch of learning; a piece of information; a science.

*, II.12:

*:he weakened his braines much, as all men doe, who over nicely and greedily will search out those knowledges , which hang not for their mowing, nor pertaine unto them.

* Francis Bacon

There is a great difference in the delivery of the mathematics, which are the most abstracted of knowledges .

(obsolete) Notice, awareness.

* 1611 , The Bible, Authorized Version, Ruth II.10:

Then she fell on her face, and bowed herself to the ground, and said unto him, Why have I found grace in thine eyes, that thou shouldest take knowledge of me, seeing I am a stranger?

(UK, informal) The deep familiarity with certain routes and places of interest required by taxicab drivers working in London, England.

* Malcolm Bobbitt, Taxi! - The Story of the London Cab

There is only one sure way to memorise the runs and that is to follow them, either on foot, cycle or motor cycle; hence, the familiar sight of would-be cabbies learning the knowledge during evenings and weekends.