Definitions
1.InterjectionUsed to greet someone, or to catch their attention.
2.InterjectionUsed in hunting to urge on the pursuers.
3.NounA shout of halloo.
4.VerbTo shout halloo.
5.VerbTo encourage with shouts; to egg (someone) on.
6.VerbTo chase with shouts or outcries.
7.VerbTo call or shout to; to hail.
8.VerbTo shout (something).