Halloo n. : A loud exclamation; a call to invite attention or to incite a person or an animal; a shout.

Halloo v. i. : To cry out; to exclaim with a loud voice; to call to a person, as by the word halloo.

Halloo v. t. : To encourage with shouts.

Halloo v. t. : To chase with shouts or outcries.

Halloo v. t. : To call or shout to; to hail.

Halloo n. : An exclamation to call attention or to encourage one.

Example:
What is the origin and meaning of "scalp Halloo"?

Taxonomy
toll free service, voice mail, 800 numbers, Virtual Office, Free Phone Calls, WebCall, auto attendant, Halloo Communications, Inc, Click-to-Call, call center, Find-me, Follow-me, agents, extensions, SERVICE PLANS, toll free number, VoIP, Voice over IP.

Defination from the web:
Halloo provides. —P. Pierrot, Children's Cardiomyopathy Foundation. About Us · Partner Login · Site Map · Privacy Policy · About this Site · Terms of Service. Copyright © 2003–2009, Halloo Communications, Inc. All rights reserved. ...