What is the meaning of throw up?

verb

13
 
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APAWordNet. (2010). throw up. Retrieved January 16, 2018, from http://smartdefine.org/throw_up/definitions/1316155
ChicagoWordNet. 2010. "throw up" http://smartdefine.org/throw_up/definitions/1316155 (accessed January 16, 2018).
HarvardWordNet 2010, throw up, Smart Define, viewed 16 January, 2018, <http://smartdefine.org/throw_up/definitions/1316155>.
MLAWordNet. "throw up" 23 October 2010. Web. 16 January 2018. <http://smartdefine.org/throw_up/definitions/1316155>