pant-hoot1
/ˈpantˌhuːt/noun
A breathy hooting or honking call uttered by a chimpanzee, typically in a series rising in a screaming crescendo and tailing off with quieter calls; a series of such calls.
Origin
1960s. From pant + hoot.
pant-hoot2
/ˈpantˌhuːt/verb
[no object] Of a chimpanzee: to utter pant-hoots.
Origin
1980s; earliest use found in Scientific American. From pant-hoot.