Definition of "nicker"

nicker¹

/ˈnɪkə(ɹ)/

noun
plural nicker
1. (Britain, slang) Pound sterling.
  Quotations
  Seems? Well, this seems to be a waste of my time. That is 900 nicker in any shop you're lucky enough to find one in. And you're complaining about 200? What school of finance did you study?
  1998, Guy Ritchie, Lock, Stock and Two Smoking Barrels (motion picture), spoken by Tom (Jason Flemyng)

nicker²

/ˈnɪkə(ɹ)/

noun
plural nickers
1. A soft neighing sound characteristic of a horse.
2. A snigger or suppressed laugh.
verb
third-person singular simple present nickers, present participle nickering, simple past and past participle nickered
1. To make a soft neighing sound characteristic of a horse.
  Quotations
  Behind him, old Akthoob was grumbling loudly, saying something about the midday meal, and Haral, the black Feridoon pony, snuffing in the old, familiar scent of the green meadows of the Chaya's banks, the warm sweet smells of home, was nickering eagerly.
  1971, Lin Carter, The Quest of Kadji, Wildside Press, published 1999, page 187
  "Nasrullah's nickerin’, Mr. Arthur. Somethin's wrong.""Hell, he's nickered before. He nickers all the time!"Robinson and Snow looked at each other, saying nothing for a moment, and finally Snow told Hancock that Nasrullah never nickered in the paddock.
  1988, William Nack, Secretariat: The Making of a Champion, Da Capo Press, published 2002, page 58
  After a few minutes, the mare walked over and nickered loudly in his ear, and he immediately got to his feet and stripped the gear from the waiting horse.
  2012, Jim Campbell, Bobcat, Xlibris, page 21
2. To produce a snigger or suppressed laugh.

nicker³

/ˈnɪkə(ɹ)/

noun
plural nickers
1. (obsolete, slang) One of the night brawlers of London formerly noted for breaking windows with halfpence.
  Quotations
  your modern musicians want art to defend their windows from common nickers
  1713-1714, John Arbuthnot, Memoirs of Martin Scriblerus
2. The cutting lip which projects downward at the edge of a boring bit and cuts a circular groove in the wood to limit the size of the hole that is bored.
3. (informal) Someone who nicks (steals) something, a thief.
  Quotations
  He […] was far more interested in the fact that I was a car thief and an expert driver than that I was a bandit. […] Car nicker, are you?
  1934, Eddie Browne, Road Pirate: The Confessions of a Motor Bandit, page 141
verb
third-person singular simple present nickers, present participle nickering, simple past and past participle nickered
1. (UK, informal) To snatch or steal.

nicker⁴

/ˈnɪkə(ɹ)/

noun
plural nickers
1. A type of mythological sea creature or sea monster; also, a water sprite; a nix or nixie; a mermaid or merman.
  Quotations
  And in another tale, told at Kemnitz of the Nicker, as he is there called, when he asks the midwife how much he owes her, she answers that she will take no more from him than from other people.
  1891, Edwin Sidney Hartland, The Science of Fairy Tales, page 48

nicker⁵

/ˈnɪkə(ɹ)/

noun
plural nickers
1. (euphemistic, vulgar, derogatory, offensive, ethnic slur) nigger.