1. jump straight up
; - Example: "kangaroos pronk"
The Collaborative International Dictionary of English v.0.48:
pronk \pronk\ v. i.
To jump straight up or almost straight up; -- used of
kangaroos and gazelles.
Note: Some less common gaits used only by few animals are the
ricochet, the pronk and the bound. The ricochet is the
gait principally employed by a class of animals such as
the kangaroo. The pronk is a gait used by quadrupeds
such as gazelle and it is equivalent to the ricochet
except that both the front and back sets of of feet
perform the same action. The bound is used by a few
small quadrupeds such as squirrels and dogs. In the
bound support alternates between pairs of legs, with
the fore and hind acting to push the body forward.
WordNet (r) 3.0 (2006):
v 1: jump straight up; "kangaroos pronk"