regurgitation
C2Substantiv/US /ˈrɛgʌrgɪtæʃən/ rĕgŭrgĭtătĭŏn; UK /ˈrɛgʌrgɪtæʃən/ rĕgŭrgĭtătĭŏn/
The act of flowing or pouring back by the orifice of entrance; specifically , the reversal of the natural direction in which the current or contents flow through a tube or cavity of the body.
