A loud exclamation; a call to invite attention or to incite a person or an animal; a shout.
- Used to catch someone's attention.
- Used to urge on hounds in a hunt.
- A shout or call of "halloo.”
- To shout "halloo.”
- To urge on or pursue by calling "halloo” or shouting.
- To call out to.
- To shout or yell (something).