How to Use "halloo" with Example Sentences

1. He gave a great halloo but no one heard him .
2. On october 8 , iranian president neigude encounters infrequent protest when the university makes a speech , about 100 students halloo to him " dictatorial " catchword , and produce conflict with the student that supports neigude .
3. Goodness ! Here are three more unpaid bills and I was just congratulating myself I was out of debt . Well , they say , never halloo until you are out of the wood .