Trespasser goes climbing, carrying this unpleasant specimen (6)
I believe the answer is:
ogress
'unpleasant specimen' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
'trespasser goes climbing carrying' is the wordplay.
'carrying' indicates the answer is hidden within the clue.
'climbing' is a reversal indicator (in a down clue, letters climb up).
'ssergo' is hidden within 'trespasser goes'.
'ssergo' reversed gives 'OGRESS'.
'this' is the link.
Can you help me to learn more?
(Other definitions for ogress that I've seen before include "earsome lady" , "man-eater" , "Frightful woman" , "'bloody difficult woman' ... ?" , "Female giant of fairy tales" .)