Talk incessantly (5)
'talk incessantly' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for yak that I've seen before include "Himalayan ox" , "Hairy Tibetan ox" , "Persistent talk" , "Long-haired ox of SE Asia" , "Tibetan animal" .)
'talk incessantly' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for yap that I've seen before include "Bark sharply" , "Bark in quick sharp bursts" , "gossip -" , "Pay up for chatter" , "Complain shrilly" .)
(Another definition for runon that I've seen is " not using paragraphs?".)