Sent round prepackaged to exhibit at the zoo (7)
I believe the answer is:
serpent
'zoo' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for serpent that I've seen before include "(In literature) a snake" , "Eve's tempter" , "the first lady found beguiling" , "Malicious person" , "Large snake, dragon" .)