halloo

1. Used to catch someone's attention.
2. Used to urge on hounds in a hunt.

A shout or call of “halloo.”

To shout “halloo.”

1. To urge on or pursue by calling “halloo” or shouting.
2. To call out to.
3. To shout or yell (something).

[Alteration of obsolete holla, stop!. See hello.]

noun

A loud cry: call, holler, shout, yell. See sounds/pleasant sounds/unpleasant sounds/neutral sounds or silence.

verb

To speak or say very loudly or with a shout: bawl, bellow, bluster, call, clamor, cry, holler, roar, shout, vociferate, whoop, yawp, yell. See sounds/pleasant sounds/unpleasant sounds/neutral sounds or silence.

The noun has one meaning:

Meaning #1: a shout to attract attention

The verb halloo has 2 meanings:

Meaning #1: urge on with shouts, of dogs in a hunt

Meaning #2: shout"halloo"