1. to shout or call out loudly, especially to attract attention or to urge on (a dog or horse)
Usage: often used in hunting contexts; somewhat archaic or literary

1. a loud shout or call
Usage: archaic or literary

1. used as an exclamation to attract attention or express surprise
Usage: archaic; variant of 'hallo'

Examples

• The hunter gave a holloa to call his dogs back from the woods.
• She let out a holloa when she spotted her friend across the street.
• Holloa! Can you hear me from over there?
• The riders would holloa to encourage their horses during the race.
• A loud holloa echoed across the valley.
• He holloaed at the top of his lungs to get their attention.