Entry 2 senses · 2 variants Webster, 1913 Measle · Mea·sle · IPA /ˈmizəl/ n. n. 01 n. A leper. 1. A leper.[Obs.] 02 n. A tapeworm larva. See 2d Measles, 4. 1. A tapeworm larva. See 2d Measles, 4.(Zool.) See: Measles