Found 2 items, similar to Halloo.
English → English (WordNet) Definition: halloo halloo n : a shout to attract attention; “he gave a great halloo but no one heard him” v 1: urge on with shouts; “halloo the dogs in a hunt” 2: shout `halloo', as when greeting someone or attracting attention
English → English (gcide) Definition: Halloo Halloo \Hal*loo"\ (h[a^]l*l[=oo]"), n. [Perh. fr. ah + lo; cf. AS. eal[=a], G. halloh, F. haler to set (a dog) on. Cf. Hollo, interj.] A loud exclamation; a call to invite attention or to incite a person or an animal; a shout. [1913 Webster] List! List! I hear Some far off halloo break the silent air. --Milton. [1913 Webster] Halloo \Hal*loo"\, v. i. [imp. & p. p. Hallooed (-l[=oo]d"); p. pr. & vb. n. Hallooing.] To cry out; to exclaim with a loud voice; to call to a person, as by the word halloo. [1913 Webster] Country folks hallooed and hooted after me. --Sir P. Sidney. [1913 Webster] Halloo \Hal*loo"\, v. t. 1. To encourage with shouts. [1913 Webster] Old John hallooes his hounds again. --Prior. [1913 Webster] 2. To chase with shouts or outcries. [1913 Webster] If I fly . . . Halloo me like a hare. --Shak. [1913 Webster] 3. To call or shout to; to hail. --Shak. [1913 Webster] Halloo \Hal*loo"\, interj. [OE. halow. See Halloo, n.] An exclamation to call attention or to encourage one. Now mostly replaced by hello. [1913 Webster]