tallyho
noun
tal·ly·ho ˌta-lē-ˈhō 
plural tallyhos
1
: a call of a huntsman at sight of the fox
2
[Tally-ho, name of a coach formerly plying between London and Birmingham] : a four-in-hand coach
Word History
Etymology
probably from French taïaut, a cry used to excite hounds in deer hunting
First Known Use
1772, in the meaning defined at sense 1