Antelope seen on safaris (3)
I believe the answer is:
gnu
'antelope seen on safaris' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for gnu that I've seen before include "Large African antelope" , "Gun for a kind of deer" , "animals" , "Wildebeest" , "Strange gun for an antelope" .)