half gainern.
/ˌhɑːf ˈɡeɪnə/, /ˈhɑːf ˌɡeɪnə/, U.S. /ˈhæf ˌɡeɪnər/ Chiefly North American.
1. Diving. A dive in which the diver leaves the diving board facing forward, does a half-somersault backward, and enters the water head first facing the board.Sometimes known as an Isander dive, after L. F. Isander (1828–93), member of the Swedish Uppsala Swimming Society.
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1908 Sunday Rev. (Decatur, Illinois) Rev. 26 July 19/4 Diving will include the front and back ‘jack knives’ and ‘half gainers’.
1928 Amer. Olympic Comm. Rep. (Ninth Olympic Games) 297 Spring Board (Men)... Running isander (Half Gainer).
1966 Ebony May 72 (caption) Sandra gracefully performs half gainer with pike.
2009 P. M. Browning Affection & Estrangem. i. 14 How I envied Bobby Duff Green as he did fancy twists and half gainers off the board at Williams' swimming pool.
2. figurative and in extended use. Any leap, fall, or move which involves a person or thing flipping or turning over in the air and landing upside down.
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the world > movement > motion in a certain direction > upward movement > leaping, springing, or jumping > [noun] > somersault
supersault1503
somersault1530
tumbling cast1530
sobersaulta1533
somerset1591
turn-over1660
pitch-pole1842
spin1842
salto mortale1896
flip-flop1902
the world > movement > motion in a certain direction > downward motion > falling > [noun] > toppling over
rureOE
pitch-polea1661
topple1907
1912 Motorcycle Illustr. 11 July 47/2 I did a jack-knife into a ditch to the right of the road, while Leo did a half-gainer into a cornfield on the opposite side.
1947 Billboard 29 Mar. 38/2 The Winter Sisters..work like mad getting their dynamic aero dance work across. Turn embraces numerous flips, pin-wheels, two-high back bends and full and half gainers.
1987 Field & Stream May 48/2 It would allow me to witness..the wonder and enthusiasm my son had abandoned when teenage hormones started doing half-gainers..off the high board.
2014 N. Stewart Lumenots 265 Yakov flew from his chair, sending it into a half gainer that barely missed taking out a window.
This is a new entry (OED Third Edition, December 2022).
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n.1908