2. 
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 a.trans. To expel from the stomach or oesophagus by vomiting. Freq. with up and out.
1538 [see sense 1b]. 
1775  J. Ash New & Compl. Dict. Eng. Lang.,   Retch (v.t. from the Sax. hrwcan), to force up from the stomach.
1854  W. W. Hall Bronchitis & Kindred Dis. (ed. 8) 262   Food is sometimes retched up or spit up.
1888  Pall Mall Gaz. 13 Oct. 2/2   Some not able to carry their load of beer further than the gutter into which they retch the foul-smelling, poisonous liquid.
1911   tr. A. Pick & A. Hecht Clin. Symptomatology 278   Diseases of the esophagus in which..the food is..retched up from the esophagus before it has reached the stomach.
1914  W. Douglas Newton War 131   My God. I never smelt anything so horrible. Made me retch my heart up.
1962  S. Raven Close of Play III. xv. 190   He led off across the field, Hugo stumbling at his side and retching out little bursts of vomit.
1987  B. A. Powe Ice Eatersii. xii. 157   She knelt at the toilet..while she retched driblets of green bile.
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 b.intr. To make an involuntary effort to vomit; to strain while making the sound or action of vomiting but without expelling anything from the stomach or oesophagus. Also occas.: to expel matter by vomiting; to throw up.
1538  T. Elyot Dict.,   Screator, he that retcheth or spitteth.
1708  Philos. Trans. 1706–07 (Royal Soc.) 25 2206   They perceive a kind of Convulsion in their Head, and vomit or retch four or five times.
1760   tr. S. A. D. Tissot Ess. Bilious Fevers 48   Some time after the second draught, there was an inclination to retch, which was followed by vomiting.
1850  P. Crook War of Hats 37   It made me almost retch To hear the tedious dullard prate and preach.
1861  G. F. Berkeley Eng. Sportsman xi. 172   A fellow..who was intermittingly prostrated by fever and ague, and lying..on the ground, retching for twelve hours out of the twenty-four.
1872  C. Darwin Emotions xi. 260   The tendency to retch from a fetid odour is immediately strengthened in a curious manner by some degree of habit.
1920  I. S. Cobb From Place to Place vi. 284   The man with the gripes who retched was still retching as he heaved himself up over the parapet.
1976  C. Cussler Raise Titanic! (1977) i. ii. 19   A spasm of nausea rushed over him and he retched uncontrollably.
2000  P. Pullman Amber Spyglass (2001) xiii. 171   The first thing Will did was to hold his stomach and retch, heaving and heaving with a mortal horror.
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