mea ‧ sles /ˈmiːz ə lz/ BrE AmE ( also the measles ) noun [uncountable]
[ Date: 1300-1400 ; Origin: Perhaps from Middle Dutch masel 'measles spot' (influenced by mesel 'leper' (13-16 centuries) ) ]
an infectious illness in which you have a fever and small red spots on your face and body. People often have measles when they are children.
⇨ ↑ German measles