merlion UK /ˈmɜːˌlaɪən/US /ˈmɚˌlaɪən/noun 2/ˈmɚˌlɪ.ən/ noun 1forms 1 noun2 •(Singapore) Often Merlion: a symbolic creature having the head of a lion and the body of a fish, which is a national symbol of Singapore; an image, statue, or other depiction of this creature.And in the fourteenth century / Because of Nila Utama's river mouth encounter with a merlion / The Lion City surged into being / And its people could travel the wide world — 2015 •A fictional creature of similar make-up.There were night penguins that emitted green light only when hunting in dark seas, and merlions whose manes were fringed with pallid lavender. — 2000 merlion UK /ˈməːlɪ.ən/US /ˈmɚˌlɪ.ən/ noun1 •A depiction of a bird similar to a house martin or swallow with stylized feet; a martlet. formsmerlions