or wack, subs. (old).—1.  A heavy, smart, sounding blow. As verb = to beat, thwack. Also a heavy fall, and as verb = to fall.

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  1837.  R. H. BARHAM, The Ingoldsby Legends, ‘The Lady Rohesia.’ A blow descended, such as we must borrow a term from the Sister Island adequately to describe,—it was a ‘WHACK!’

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  1851–61.  H. MAYHEW, London Labour and the London Poor, II. 564. Sometimes a chap will give me a lick with a stick just as I’m going over; sometimes a reg’lar good hard WHACK.

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  1888.  W. A. CLOUSTON, The Book of Noodles, ii. A traveller, coming up, finds the missing man by WHACKING each of them over the shoulder.

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  1886.  Daily Telegraph, 21 Feb. Yet the Flannigans and the Murphys paid no heed to him, but WHACKED away at each other with increasing vigour.

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  1887.  The Field, 24 Sept. Father WHACKS her and the children in turns.

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  2.  (common).—A share; piece; spec. an equal portion (GROSE): also WHACKING. As verb (or GO WHACKS) = (1) to divide, to share; and (2) to settle, pay up: e.g., WHACK the blunt = share the money; Give me my WHACK = Hand me my due. Also TO WHACK UP.

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  1840.  THACKERAY, A Shabby Genteel Story, v. This gay young bachelor had taken his share (what he called ‘his WHACK’) of pleasure.

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  1851–61.  H. MAYHEW, London Labour and the London Poor, II. 152. They then, as they term it, WHACK the whole lot. Ibid., II. 172. At last Long J—— and I got to quarrel about the WHACKING; there was cheatin’ a-goin’ on.

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  1887.  J. W. HORSLEY, Jottings from Jail, i. So when we got there, there was some reelers there what knew me, and my pals said, ‘You had better get away from us; if we touch, you will take your WHACK (share) just the same.’

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  1884.  GREENWOOD, The True History of a Little Ragamuffin, xv. ‘You agreed that we should GO WHACKS in everything,’ I pleaded, appealing to his sense of justice. Ibid., Tag, Rag, & Co., ‘A Converted Burglar.’ The sound, old-fashioned principle of ‘sharing the danger and WHACKING THE SWAG.’

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  1890.  G. WALCH, A Little Tin Plate.

        My word! he did more than his WHACK;
  He was never a cove as would shirk.

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  1889.  Electrical Review, 2 Feb, 9. 1. The city has never WHACKED UP with the gas company.

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  3.  (colloquial).—An attempt, a trial, a stroke.

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  4.  (provincial).—Appetite, TWIST (q.v.).

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  TO WHACK IT UP, verb. phr. (venery).—To copulate: see GREENS and RIDE.

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  WHACK! adj. (printers’).—An emphatic expression of doubt; a polite way of giving the lie direct.

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