Definitions
1.NounA dark image projected onto a surface where light (or other radiation) is blocked by the shade of an object."My shadow lengthened as the sun began to set.; The X-ray showed a shadow on his lung."
2.NounRelative darkness, especially as caused by the interruption of light; gloom; obscurity."I immediately jumped into shadow as I saw them approach."
3.NounAn area protected by an obstacle (likened to an object blocking out sunlight)."The mountains block the passage of rain-producing weather systems and cast a "shadow" of dryness behind them."
4.NounA reflected image, as in a mirror or in water.
5.NounThat which looms as though a shadow."I lived in her shadow my whole life."
6.NounA small degree; a shade."He did not give even a shadow of respect to the professor.; I don't have a shadow of doubt in my mind that my plan will succeed."
7.NounAn imperfect and faint representation."He came back from war the shadow of a man.; The neopagan ritual was only a pale shadow of the ones the Greeks held thousands of years ago."
8.NounA trainee, assigned to work with an experienced officer.
9.NounOne who secretly or furtively follows another."The constable was promoted to working as a shadow for the Royals."
10.NounAn inseparable companion.
11.NounA drop shadow effect applied to lettering in word processors etc.
12.NounAn influence, especially a pervasive or a negative one.
13.NounA spirit; a ghost; a shade.
14.NounAn uninvited guest accompanying one who was invited.
15.NounAn unconscious aspect of the personality.
16.AdjectiveUnofficial, informal, unauthorized, but acting as though it were."The human resources department has a shadow information technology group without headquarters knowledge."
17.AdjectiveHaving power or influence, but not widely known or recognized."The director has been giving shadow leadership to the other group's project to ensure its success.; The illuminati shadow group has been pulling strings from behind the scenes."
18.AdjectivePart of, or related to, the opposition in government.
19.AdjectiveActing in a leadership role before being formally recognized."The shadow cabinet cannot agree on the terms of the agreement due immediately after they are sworn in.; The insurgents’ shadow government is being crippled by the federal military strikes."
20.VerbTo shade, cloud, or darken."The artist chose to shadow this corner of the painting."
21.VerbTo block light or radio transmission from."Looks like that cloud's going to shadow us."
22.VerbTo secretly or discreetly track or follow another, to keep under surveillance.
23.VerbTo represent faintly and imperfectly.
24.VerbTo hide; to conceal.
25.VerbTo accompany (a professional) during the working day, so as to learn about an occupation one intends to take up.
26.VerbTo make (an identifier, usually a variable) inaccessible by declaring another of the same name within the scope of the first.
27.VerbTo apply the shadowing process to (the contents of ROM).