Entry 1 sense Webster, 1913 Mallow /măl'-ō/ · Mal·low · IPA /ˈmæloʊ/ 01 n. A genus of plants (Malva) having mucilaginous qualities. See Malvaceous. 1. A genus of plants (Malva) having mucilaginous qualities. See Malvaceous.(Bot.) See: Malvaceous Phrases & compounds Indian mallow — See Abutilon. Jew's mallow — a plant (Corchorus olitorius) used as a pot herb by the Jews of Egypt and Syria. Marsh mallow — See under Marsh.