Bucking

n. bleaching

v. move rapidly and with violence; jump vertically legs stiff and back arched ; bet, gamble (Slang)

Bucking is a movement performed by a horse in which the animal lowers his head and raises his hindquarters into the air, usually while kicking out with his hind legs. If powerful, it may unseat the rider enough so that he or she falls off.
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Bucking Respiratory therapy Violent resistance by a Pt to intubated ventilation that may cause asynchronous breathing, ergo V/Q mismatching and risk [more]Bucking - Community and Resources

Noun
1. a gymnastic horse without pommels and with one end elongated; used lengthwise for vaulting
(synonym) vaulting horse, long horse
(hypernym) horse
2. a piece of paper money worth one dollar
(synonym) dollar, dollar bill, one dollar bill, clam
(hypernym) bill, note, government note, bank bill, banker's bill, bank note, banknote, Federal Reserve note, greenback
(classification) United States, United States of America, America, US, U.S., USA, U.S.A.
3. a framework for holding wood that is being sawed
(synonym) sawhorse, horse, sawbuck
(hypernym) framework, frame, framing
(hyponym) trestle
4. mature male of various mammals (especially deer or antelope)
(hypernym) placental, placental mammal, eutherian, eutherian mammal
(hyponym) stag
(derivation) jerk, hitch
Verb
1. to strive with determination; "John is bucking for a promotion"
(hypernym) endeavor, endeavour, strive
2. resist; "buck the trend"
(synonym) go against
(hypernym) react, oppose
3. move quickly and violently; "The car tore down the street"; "He came charging into my office"
(synonym) tear, shoot, shoot down, charge
(hypernym) rush, hotfoot, hasten, hie, speed, race, pelt along, rush along, cannonball along, bucket along, belt along
(hyponym) rip
(verb-group) dart, dash, scoot, scud, flash, shoot
4. jump vertically, with legs stiff and back arched; "the yung filly bucked"
(synonym) jerk, hitch
(hypernym) move
Adjective
1. of the lowest rank in a category; "a buck private"
(similar) subordinate, low-level

n. kipper, salted and dried or smoked fish