Ox (3)
'ox' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for oaf that I've seen before include "one of thick character" , "A clumsy boor" , "Boor or lout" , "buffoon" , "Boorish person" .)
'ox' is the definition.
(I know that yak is a type of ox)
This is the entire clue.
(Other definitions for yak that I've seen before include "Pack animal" , "Wild ox" , "Ox; prattle" , "Natter" , "Gossip; ox" .)
'ox' is the definition.
(castrated ox)
This is the entire clue.
(Other definitions for steer that I've seen before include "Reset so as to direct" , "piece of advice" , "Guide, direct" , "The animal to direct" , "Guide - castrated ox" .)