Entry 2 senses · 2 variants Webster, 1913 Izzard /ĭz'-ẽrd/ · Iz·zard · IPA /ˈɪ.zəɹd/ n. n. 01 n. See Izard. 1. See Izard.(Zool.) See: Izard 02 n. The letter z; -- formerly so called. 1. The letter z; -- formerly so called.