Definition of "halloo" in English

interjection

1. Used to greet someone, or to catch their attention.

2. Used in hunting to urge on the pursuers.

noun

1. A shout of halloo.

verb

1. (intransitive) To shout halloo.

2. (transitive) To encourage with shouts; to egg (someone) on.

   • 1718, Matthew Prior, Alma, or, The Progress of the Mind, Canto 2, in Poems on Several Occasions, London: J. Tonson and J. Barber, Volume 2, p. 101, Old JOHN halloo’s his hounds again:

3. (transitive) To chase with shouts or outcries.

4. (transitive) To call or shout to; to hail.

5. (transitive) To shout (something).