Entry 1 sense Webster, 1913 Malagasy /mălˌ-əg-ăs'-ē/ · Mal·a·gas·y · IPA /ˌmɑləˈɡɑsi/ 01 n. sing. & pl. A native or natives of Madagascar; also (sing.), the language. 1. A native or natives of Madagascar; also (sing.), the language.