Par ‧ kin ‧ son’s dis ‧ ease /ˈpɑːkəns ə nz dɪˌziːz, ˈpɑːkɪns ə nz dɪˌziːz $ ˈpɑːr-/ BrE AmE ( also Parkinson’s ) noun [uncountable]
[ Date: 1800-1900 ; Origin: James Parkinson (1755-1824), British doctor ]
a serious illness in which your muscles become very weak and your arms and legs shake