Halloo is a 6 letter English word. It's valid Scrabble word worth 9 points. It's valid Words with friends word worth 10 points.
You can make 44 anagrams from letters in halloo (ahlloo).
John and Rob put their hands to their mouths and gave a loud “halloo!”
Keep the boy close beside you, and when you need help, halloo.
And, at the second “halloo,” he slew Her brothers with locks of yellow hue.
Even as I was about to lift up my voice to halloo unto her, lo!
With song and halloo and blast of horns, they swept away into the forest.
He gave a halloo, which attracted Fred's attention, and then he beckoned to him.
There had been another ride when he had come to her in a halloo of storms.
At that instant a loud shout smote his ear; it was the halloo of his pursuers.
So I stood in my boat waving the cloak over my head and shouting “halloo!”
Carefully trying to place it in his scarf, he heard the halloo, 'Who goes there?'