palpitate /ˈpælpəˌteɪt/ verb Learner's definition of PALPITATE
[no object] of the heart
: to beat quickly and strongly and often in a way that is not regular because of excitement, nervousness, etc.(心脏)急速不规则地跳动;心悸 — palpitation
/ˌpælpəˈteɪʃən/ noun, plural palpitations medical [count]